Son of Sardaar story begins with Rajveer (ajay) who works in London for a friend (salman). He gets an intimation from his hometown in Punjab that he would be inheriting his family property. Rajveer leaves for Punjab and in the train journey he meets Jiya (sonakshi). However, Jiya happens to be the niece of Ranvijay Singh (sanjay) whose family has a long standing enmity with Rajveer’s family. Anyways, Rajveer enters Ranvijay’s home as a guest and later his true identity is discovered. But one tradition stops Ranvijay. A guest is equal to God so they wait for Rajveer to leave their home. What happens after that forms the rest of the story.