This story is based on the personal and professional life of an Indian film producer director P K who has gained fame for his fabulous work. He is very dedicated towards his family but a point he comes across a girl who is almost half the age of him and who drastically changes his life. Her name is RIYA who is a struggling artist but falls in love with him selflessly and dedicates her life to him. However, PK has already experienced love affairs before but gets attracted and committed towards Riya for her unconditional love and care for him. PK goes through a sickness which only Riya stands by him and with utmost care handles every situation in his life. Thereafter, PK starts developing liking and starts loving her as even his family has always neglected him and have had only materliastic concern with him.