Sehar’s (Ayesha Takia) world turns topsy-turvy when she gets a clue about the missing Sunday of her life, which points to a possible violent attack on her. A.C.P Rajveer (Ajay Devgan) takes up the case to sort out the complicated and jumbled up threads of Sehar’s life.

In the process of solving Sehar’s case it comes to light that on Sunday, different people interacted with her and amongst them, one could be the accused. The lot included Ballu (Arshad Warsi), the taxi driver and his friend, Kumar (Irrfan Khan), a struggling NSD actor, Ritu (Anjana Sukhani), Sehar’s close friend, a scary and suspicious character who resides in Sehar’s society, and the group whom she had come across while partying at the discotheque.

While trying to solve the puzzle, Rajveer stumbles upon a murder case whose clues hold up Sehar to be the culprit.