UNEXPECTED?

A Guy Rishi who is a Decent Guy fallen love with a Girl, But Unexpectedly Happened That he used to Carry a Gun and Started his Journey to find a person ?? The past and Present story of Rishi is used to narrate in his own style to balance everything which Happened in his whole Life. Why didn't he carry A Gun?? Didn't Her Love was acceptable?? Who he is that Unknown person?? Rishi becomes a Serial Killer?? What happened in the Past?? To know that Read in his unique style with full of Lovable + Bad attitude Method... EXPECT THE UNEXPECTED ??