Star Entertainment worldwide Pvt. Ltd's Laali Ki Shaadi Mein Laaddoo Deewana is a love story between a girl named Laali (Akshara Haasan) and her boyfriend Laaddoo (vivaan Shah). Even though the two happen to be in love with each other, Laaddoo dumps Laali because she gets pregnant with his child and that too before marriage.
Because Laaddoo dumped Laali, his parents disown him and adopt Laali as their daughter. On the other hand, Laali's parents disown her and adopt Laaddoo as their son. Things become worse when Laaddoo's 'new parents' go to Laali's newfound parents to initiate a matrimonial alliance between the two.
What happens of Laali and Laaddoo in the end, do they land up marrying each other or they remain split throughout is what forms the rest of the story.