My Sister's Friend: Didi Ki Saheli (2020)

Avinash is a lonely boy who lives alone with his mother. Their parents are separated. Avinash's big sister, Ankita lives in Mumbai pursuing her career. Their mother attends seminar all over the world. Avinash and his sister earlier made a pact that they will accompany their mother alternatively. This way they can enjoy the tour without any confrontation. Avinash's mother is now going to London for a seminar. Avinash is going with her this time. One night Ankita calls Avinash to inform that she is returning to Kolkata with a hot girlfriend.