Agnibha Bose (Sourav Das), a struggling and mentally disturbed novelist, is trying to battle his personal trauma. However, when he meets the ultimate therapist of his life and career, a necrophilic serial killer Taufique Asif (Subham) who is serving a death sentence in prison it changes his life forever. Will Agnibha be able to pull out a winning novel after three consecutive failures? What's his relationship with his publisher and partner Rukmini (Sumana Das)? What are the dark hidden chapters of Taufique's life?

Amar Challenge is a drama film directed by Nehal Dutta, featuring Ritika and Subham in prominent roles.