Diya Aur Baati Hum

Sandhya and Sooraj are living happily with their son Ved Rathi. After some twists and turns, the Rathis find out that Sandhya and Sooraj's other twin son Vansh Rathi never died, but was raised by Ankur and Ankita, who plotted the whole kidnapping fiasco. Sandhya cuts all ties with her brother, but lets him keep the child for the sake of Vansh's happiness.

As Sooraj dreams of opening a big hotel and works for it along with Sandhya, she gets appointed for an extremely perilous mission, titled Mahabhali, to track a dangerous terrorist and defeat him in his own territory in West Bengal faking her identity as Sagarika. Therefore, she leaves her family and enact her own death in a train accident.

Everybody in the family believe that Sandhya is dead. Sooraj has lost his dreams of opening a hotel and mental stability due to the shock of witnessing his wife's death and refuses to believe she's gone. Santosh now hates Sandhya as she holds her responsible for Sooraj's condition and wants him to remarry Laalima Agarwal, for whom she believes, is able to help him get better. Meanwhile, she battles with the difficulties of Mahabhali.

Sandhya eventually manages to sabotage their plan but her true identity is exposed and the terrorists capture and almost torture her to death. Soon, Sooraj finds out Sandhya is indeed alive. Sooraj joins along on the mision and help Sandhya. After successfully completing the mission, they return home. However, Santosh refuses to forgive Sandhya, who also faces a stiff competition in the face of Laalima, who falls in love with Sooraj, but Sooraj and Sandhya's love wins and Santosh forgives her as Laalima gives up.

Later, Sooraj's youngest brother Mohit is shot to death after attempting to molest Laalima by Santosh. With the help of women's rights activists, Sandhya bails her out.

Santosh hates Pakistan because of a tragic accident on the border which took her younger brother's life when they were children. Not knowing Arzoo is from Pakistan, she fixes her alliance with. Initially, Sandhya suspects Arzoo of being a terrorist but later not only saves her from the terrible misunderstanding, but also helps her get accepted by Santosh.

Sooraj meets with an accident and is stuck in a wheelchair. Sandhya decides to run his confectionary shop, leaving her job, much to Sooraj and the family's displeasure. As she delivers a daughter named Kanak, Sooraj overcomes his disability and is able to walk and run his shop again. Sandhya gets a proposal from the commissioner and joins the police again. There she meets IPS Arpita Khanna, who considers Sandhya as her rival at first, but later becomes one of her best allies. Soon, Vansh discovers the truth of his birth parents but hates them for giving him away.

Four terrorists kill Ankur and Ankita and also take the residents of the Rathis' neighbourhood hostage, including them. Sandhya and Sooraj bravely rescue the civilians. Upon seeing his parents' selflesness and courage, Vansh forgives them and the family is reunited, but not for long. Sandhya and Sooraj unsuccessfully try to set a trap for the terrorists and to punish them, the leader kidnaps Kanak and makes Sandhya and Sooraj eat bomb pills to save her.

They bid their farewell to their family and others and jump into the river before exploding. The show ends with Sandhya's mangalsutra and Sooraj's chain becoming entangled in the water before the setting Sun, highlighting that even death cannot separate them.

• Deepika Singh as IPS Sandhya Rathi– Kanchan and Arvind's daughter; Ankur's younger sister; Sooraj’s wife; Ved, Vansh and Kanak’s mother. (2011–16)
• Anas Rashid as Sooraj Rathi– Santosh and Arun's elder son; Vikram, Mohit, Chavvi's brother; Sandhya’s husband; Ved, Vansh and Kanak’s father. (2011–16)

• Neelu Vaghela as Santosh Rathi (Bhabo) –Arun's wife; Sooraj, Vikram, Mohit and Chavi's mother. (2011–16)
• Ashok Lokhande as Arun Rathi (Bhabasa) – Santosh's husband; Sooraj, Vikram, Mohit and Chavi's father. (2011–16)
• Gautam Gulati/Karan Goddwani as Vikram Rathi – Santosh and Arun's second son; Meenakshi's husband; Mishri and Golu's father (2011–14)/(2014–2016)[4]
• Kanika Maheshwari as Meenakshi Rathi (Meena)–Vikram's wife; Mishri and Golu's mother (2011–16)
• Varun Jain as Mohit Arun Rathi– Santosh and Arun's youngest son; Emily's husband; Pari's father (2011–15)
• Sehrish Ali as Chavi Arun Rathi– Santosh and Arun's daughter; Dilip's divorced wife (2011–16)
• Aryan Sharma as Young Aryan Rathi (Chotu) (2011–15)
• Rashmi Pitre as Chaturi– Rathi family's house hold help (2011–14, 2016)
• Varun Khandelwal as Ankur Arvind Kothari– Kanchan and Arvind's son; Sandhya's elder brother; Ankita's husband (2011–16)
• Urmila Nimbalkar/Shubha Uplopwar/Unknown as Ankita Ankur Kothari- Ankur's wife; Bulbul's mother (2011–13)/(2014–15)/(2016)
• Rakesh Kukreti as Arvind Kothari– Ankur and Sandhya's father (2011)
• Surbhi Tiwari as Kanchan Arvind Kothari– Ankur and Sandhya's mother (2011)
• Urmila Sharma as Daisaa- Rathi's neighbour (2011–16)
• Kanishka soni as Kavita - Daisaa's daughter in law (2011–16)
• Ruchi Savarn as Preeti (2011)
• Nupur Alankar as Kisna (2011)
• Kiran Bhargava as Malti Agarwal – Owner of the night college where Sandhya studied (2012)[5]
• Unknown as Sudha – Meenakshi's younger sister (2012–14)
• Ragini Shah as Maa Sa (2012, 2013, 2016)
• Deepak Gheewala as Dado Sa (2012, 2013)
• Gaurav Sharma as Rajkumar – Maya's brother; A terrorist (2012, 2014)
• Satyam Seth as Dilip- Chavi's ex-husband (2013–15)
• Pooja Singh as Emily Mohit/Om Rathi–Mohit's wife; Om's second wife; Pari's mother (2013–16)
• Pallavi Rao as Kajri (2013)
• Eijaz Khan as Abhimanyu Singh (2013)
• Preeti Chaudhary as Kavita Sharma (2013–14)
• Charu Asopa as Roma Reddy (2014)
• Alan Kapoor as IPS Rahul Kapoor (2014)
• Keith Sequeira as Officer Roy (2014)
• Vindhya Tiwari as Prema (2014)
• Jyoti Sharma as Disha (2014)
• Gurdeep Kohli as Maya/Baijii – Rajkumar's sister; The terrorist leader who hijacks the plane. (2014)
• Arjun Punj as IPS Arjun Chaudhary (2014)
• Sonam Lamba as Shalu – One of the passengers in the hijacked plane (2014)
• Manini Mishra as Officer Agrima Singh (2014–15)
• Neil Bhatt as IPS Zakir Siddiqui (2014–15)
• Lavneet Rajput as Young Bulbul Kothari – Ankur and Ankita's daughter. (2014-15)[6]
• Devyansh Tapuriah as Ved Rathi– One of the Sandhya and Sooraj's twin son; Vansh and Kanak's elder brother. (2015–16)
• Ricky Patel as Vansh Ankur Kothari / Vansh Sooraj Rathi (2015–16)
• Reem Sheikh as Mishri Vikram Rathi– Meenakshi and Vikram's daughter; Golu's elder sister (2015–16)
• Sadhil Kapoor/Kiran Mohnani as Golu Rathi – Vikram and Meenakshi's son; Mishri's younger brother (2015)/(2016)
• Drisha Kalyani as Pari Rathi – Mohit and Emily's daughter (2015–16)
• Randeep Rai/Kunal Khosla as Adult Aryan Rathi (Chotu)– Rathi's adoptive son; Arzoo's husband (2015)/(2016)[7][8]
• Shivshakti Sachdev as Bulbul Kothari – Ankur and Ankita's daughter (2015)[6]
• Rituraj Singh as Mahendra Singh – Kabaddi Coach of Sooraj and his team (2015)[9]
• Jignesh Mehta as Avinash – One of the players in Sooraj's Kabbadi team (2015)
• Vicky Arora as Ratan – One of the players in Sooraj's Kabaddi team (2015)
• Banty Chopra as Lakhan – One of the players in Sooraj's Kabaddi team (2015)
• Sandeep Nahar as Babban – One of the players in Sooraj's Kabaddi team (2015)
• Arun Singh Rana as Prem – Sooraj's Kabaddi Team Captain (2015)
• Aadesh Chaudhary as Chandrashekhar – Leader of terrorist group Garjana Sangh (Chandu) (2015)
• Bharat Singh Jadon as Ashok (2015-2016)
• Amit Dolawat as Himanshu Dubey – Manjari's son (2015)[10]
• Ekta Tiwari as Devi Narayani (2015)
• Vaishali Thakkar as Manjari – Himanshu's mother (2015)
• Shalini Arora as Yashoda (2015)
• Shefali Sharma as Laalima Agarwal – Lokesh's sister (2015–16)
• Akshay Batchu as Lokesh Agarwal – Laalima's brother (2015–16)
• Sarwar Ahuja as IPS Satyadev Tripathi – Head investigator of Mohit's murder case (2015–16)
• Prachi Tehlan as Arzoo Rathi– Aryan's wife.(2016)
• Joyoshree Arora as Resham- Arzoo's grandmother. (2016)
• Rukhsar Rehman as Mehak (2016)
• Deepraj Rana as Gul Mohammad (2016)
• Abhinav Shukla as Om Rathi- Poorvi's first husband; Emily's second husband. (2016)
• Pooja Sharma as Poorvi Om Rathi- Om's first husband. (2016)
• Rishina Kandhari as Arpita Khanna – Sandhya's co-officer (2016)
• Anshul Trivedi as Amit (2016)
• Vishal Jethwa as CP – The leader of the terrorist group who subjugate Hanuman street (2016)
• Akhil Kataria as PP (2016)
• Ashish Chowdary as Jimmy (2016)
• Unknown as Rocky (2016)

Due to popular demand from viewers, the show is on rerun for 1 hour and 30 minutes (3 episodes) at 8:00 pm on Star Utsav from 22 April 2019.[25]

It was dubbed in Telugu on Star MAA as Eetharam Illalu.[26] In the Tamil it was dubbed under the title, En Kanavan En Thozhan on Star Vijay.[27] However both the versions were discontinued by the respective channels after airing 1,203 and 1,077 episodes.

Internationally it aired in Sri Lanka dubbed into Sinhala as Swapna on Sirasa TV[28] and in Vietnam dubbed in Vietnamese as Vợ tôi là cảnh sát on VTVCab 5 Echannel, although the ending was altered with the family celebrating.[29][30] It also airs in Afghanistan in Pashto on Lmar TV as د مینې ډيوه.[31] On 2 January 2017 Diya Aur Baati Hum started airing also in Slovakia as Sandhya - svetlo môjho života.[32] It also began airing on CVM Television in Jamaica on 1 May 2017, as Made For Each Other. It also began airing on TV1 in Lithuania as "Mano gyvenimo šviesa".[33] In Indonesia, the series is dubbed in Indonesian under the title Sandya, and airs on Indosiar.[34]

It also aired successfully in Romania as 'b'Destine Implinite',[35] Tajikistan, Afghanistan, Bulgaria as 'Svetlinata Na moya jivot', Macedonia, Russia as 'Svet tvoey lyubvi', Kazakhstan, Sri Lanka, Thailand as 'Likhit rak ni pheux thex', Vietnam, Uganda, Nigeria, Lithuania, Georgia as 'Dinastia', Cambodia as 'Veasna kon brosa srey', Indonesia and Pakistan and was watched by more than 148 Million viewers worldwide.[36]

The series was remade in other languages in India in

• Marathi as Mansicha Chitrakaar Toh on Star Pravah[37][38]
• Malayalam as Parasparam on Asianet[39]
• Bengali as Tomay Amay Mile on Star Jalsha[40][41]
• Kannada as Akashadeepa on Asianet Suvarna[42]

However the Bengali, Marathi and Kannada versions were stopped after 992, 377 and 700+ episodes, while the Malayalam version has completed 1,524 episodes which was more than the original version on Asianet. It was one of the top rated and longest ran serial on Malayalam Television and received lot of Awards and appreciation.[39]