Locket is an action thriller drama. The movie revolves around the hidden treasure that belongs to the royal family, and the only way to it is on the map in two secret lockets. When Raja Sahab (Murad), the king, entrusts everything in the name of his grandson, Prince Anil (Vinod Mehra), his evil nephew, Veer Pratap Singh (Kader Khan) is enraged. Veer Pratap tries to attack Anil, but he is protected by Raja’s trusted servant, Diwan Sardarilal (Shreeram Lagoo). Later, Veer abducts Sardarilal and keeps him as his hostage till he reveals the whereabouts of the secret lockets holding the map to the hidden treasure. Will Veer Pratap be able to find the hidden treasure, or will it go to its true owner, Prince Anil?