Black Butterfly is a Malayalam thriller film, directed by Rajaputra Ranjith and starring Mithun Murali and Malavika Nair in lead roles. It is a remake of the Tamil film, Vazhakku Enn 18/9. One thoughtlessly naughty act can have a hundred untold consequences. A group of student pranksters makes life difficult for those around. Years later, two couples - Reena and Benny, and Deepak and Aarathi - have to face the fallout. Can they confront the past? Watch the full film, streaming online on Hotstar.