21, in the clandestine world of RAW is a top operative and a secret agent. When his name is associated with a bomb blast in Guwahati, he is branded a traitor. The Minister orders to kill him at sight. Anwar, a Naval Commander, jumps in to save him. Bodies pile up, alliances change; everyone they meet is an enemy or another spy. He has to keep his wits, trust no one and be one step ahead in the game to live, to save his country and 21.