Mangal Deep is a 1989 Bengali drama film starring Ranjit Mallick, Tapas Pal and Satabdi Roy. The story revolves around two friends, Mangal and Deep, who aspire to be singers. They move to a city and soon Deep starts getting offers and becomes popular, while Mangal continues to struggle. Meanwhile, Sunil, a rich man, creates misunderstandings between Mangal and Deep and they drift apart. Will the two friends ever reunite?