Reunion (2018)

A group of college friends meet after twenty long years and plan a trip to Kolkata. The reunion leads to nostalgia and they end discussing one of their mentors who has been missing for twenty years. Surprisingly, on the same trip, the group happens to meet their mentor, who now works for poor and needy and leads a very simple and different life. What follows is their quest to solve many unanswered questions that have been troubling them for twenty years.

Unfortunately the movie Reunion is not yet available on HBO Max.