Kizie Basu is fighting thyroid cancer when she meets Immanuel ‘Manny’ Rajkumar Junior, who has previously suffered from osteosarcoma and is in remission. Manny and his friend JP, who is suffering from glaucoma and is blind in one eye, are making a movie together, inspired by Rajinikanth’s films. Manny invites Kizie to be the female lead. The two bond over his love for Rajnikanth’s movies and her love for music, specifically an incomplete song by retired songwriter Abhimanyu Veer (Khan). Kizie and Manny gradually fall in love as they shoot scenes for JP’s film. They decides to make ‘Seri’, the Tamil word for ‘okay’, their secret word that will help them remember that everything will be okay in life and to stay positive. After an operation, JP loses sight in his second eye, making him go blind.
One day, Manny informs Kizie that he has managed to track down Abhimanyu Veer and get in touch with him. Kizie e-mails Veer, who replies that she can visit him in Paris to get her questions answered. Kizie and Manny convince Kizie’s parents to allow them to take the trip, with the condition that Kizie’s mother joins them. As they are making arrangements for the trip, Kizie’s cancer gets worse and she is hospitalised.
After her recovery, she is weakened and initially distances herself from Manny but later relents. They go to Paris to visit Abhimanyu, who turns out to have no conclusive answers, disappointing Kizie. Soon after, Manny informs Kizie that his cancer had returned and is now terminal.
