The film is set in Darjeeling and revolves around the Deb family. The eldest son of the family Nishith invites his brothers Sudev, Debesh, and Rohit, along with their sister Semonti and her husband Tridib (for the first time), to their ancestral home named "Abhilash" in Darjeeling on the eve of Christmas. The reunion is intended to rekindle their childhood memories, but as the story unfolds, each character reveals secrets, makes major revelations, and works towards restoring broken promises. The film delves into the family dynamics and explores the belief in miracles that binds the family together.