Anaerobic Love Deep Sea Prisoner

Bin He has an unrequited love for his best friend, Hai. During their Uni graduation trip, Bin He was feeling down because his best friend is finally going to pursue the girl he likes. They decide to have a friendly diving competition. While diving , Bin He sees a man chained to a shipwreck at the bottom of the sea. Beneath the sea begins an anaerobic love.What will be born from this fateful meeting?