Chithi is an Indian Tamil prime time soap opera that aired on Sun TV.

The serial stars Radhika Sarathkumar in dual roles, with Sivakumar, Yuvarani, Subhalekha Sudhakar, Hemalatha / Neena and Deepa Venkat.

Anju, Latha Sabapathi, Poovilangu Mohan, Ajay Rathnam, Riyaz Khan, Vijay Adhiraj and Tharika play supporting roles.

A reboot version of the series titled Chithi 2 premiered from January 27, 2020, on Sun TV starring Radikaa Sarathkumar and Preethi Sharma.

A Brahmin society in Srirangam, Trichy, Ramachandran, lives with his seven-year-old daughter Kaveri and a mentally challenged wife Vaidhegi.

On the night of Karthigai Deepam, Vaidhegi drowns in a river, and following, a woman is running and a few men chasing her with firesticks.

They buy clothes linings and materials worth about 10 Lacs and ask Mahalingam to loan it to them to which he disagrees.

Mahalingam was forced to marry the Padma but secretly lives with Janaki with whom he gave birth to two daughters Viji and Geetha.

Years pass, Sharadha business Kaveri Garments grows with profit, and she delivers two more kids, daughter Swetha and son Sreevatsan.

Srinivasan was found to be physically challenged as Prabha has taken a tablet to try to abort him, but Krishna is happy that the child is with Sharadha who loves him.

On the day of fleeing on her 19th birthday, she found Nagu's true colours and both get remanded in a police station, Sharadha comes and saves her and hides the truth from her family.

However, still, they make Yogi stay in their home, as he was a successful Manager for Kaveri Garments and Architect for Sharadha Illam as none knew about the past.

Kaveri wedding gets fixed and got stopped as Ramu hid the truth to grooms parents that Sharadha belongs to different caste, as Vaidehi's mother exposed it.

Meanwhile, Viji who faced torture under Anand and his family runs from their home and seeks Sharadha's house for shelter.

She gifts a house to them, and he works part-time at Temple, then in a computer training centre and evening as hotel supervisor to support his family.

Story shifts to flashback to Thirunelveli, where Sharadha is found to be IAS Collector of Thiruvnelveli, she has a twin sister named Sakthi Eshwar who is AC.

Their father Eashwaran Pandiyan is a business tycoon and big don of the city which has fume with MLA Viswanathan.

Amidst this, Sharada and Shakti's mother dies in a bomb blast, and Sharadha fights with her father.

Viji faces problems at the factory due to her past life with Anand and Sharadha gets her married to Yogi.

Suddenly, Krishna who has gotten liver cancer by his drinking habit last time, But he is mysteriously killed by a group.

She dies of injuries but gives birth to a healthy baby girl whom Yogi names Sakthi.

Kavery is left childless even after consulting many doctors and gains more of her mother-in-law's wrath.

At the day of her wedding, Shweta runs away with a useless, poor slum guy called Kannan.

Under some circumstances, Sharadha and the family move to the Janaki's house like before, Vaidhegi chases her mother out and goes a change of heart.

Velu Mani finds the relevant document of Sharadha being Prasad's birth mother and is shocked.

Heart-broken in thinking that Prasad is not his real nephew at first, he changes and demands 5 crores from Prabha to hide the truth.

Srinivas fights with Prabha and Prasad accidentally pushes him against a wall, injuring his head.

Meanwhile, Yogi learns the truth about the original sons of Sharadha and Prabha from the suicidal letter of Sakthi.

Several days later, Yogi brings photograph crew to the Sharadha Illam to take a family photo.

The title song and the background score was composed by the music director Dhina lyrics written by Vairamuthu.