Blue is the first Bollywood underwater movie which is full of action, adventure and thriller. The story revolves around a treasure lays buried deep at the bottom of an ocean. There are many people who want to get there by risking life, be it theirs or someone else’s.
Sagar and Sam are brothers who are interested in treasure. Along with Mona, Sagar's wife, they travel to the Bahamas in search of a mysterious treasure hidden 200 feet deep within the sea.
Along the way, they meet Aarav who is searching for the same treasure. But they don't know is that Aarav is a devious con-artist who would stop at nothing to get what he wants. The treasure is gurded by sharks, sting rays, and other marine animals. The rest of the story deals with the 4 characters go diving deep withing the sea in search of the treasure.