A story of a girl named Anna who is a university student and unsure of what to do in life. She always wanted to do something big or achive something but never had the chance. She was in zoo and found a mysterious pendant on the ground, it was a weirdly shaped fish pendant and afterwards, a guy began to chase her out of nowhere. But who knew that guy that chased Anna was the guy who was going to turn her life upsidedown by going in a unexpected adventure through the sea. They both made a deal to help each other, Fin wanted Anna to help him seal a curse using her necklace, and Anna wanted Fin to help her find the beauty in marine life in order to find the reason why her mom left her and died because she wanted to protect the sea.