Welcome Son is a soft comedy and emotional gay story of father and son. Kapoor is an old age man living with his son Ravi.One day Kapoor has to go village regarding some property issue. He tell his son that son of his friend Mishra will come to stay with him. Dino, son of Kapoor's friend arrive. He is naughty. In begining, Ravi get fed up with his naughty activities but slowing he start loving him.