Park Goo mutates into a man-fish due to side effects from an experimental drug. He receives heavy publicity and becomes a star. A conspiracy by a pharmaceutical company leads Park Goo to being possibly expelled from the world.
A gym teacher and his female student look for her missing friend. But as they investigate, they find that her disappearance is a part of a larger conspiracy.
'Sumbisori' means 'the sound of a haenyeo exhaling on the surface' and tells the warm story of a mother and daughter who have lived as haenyeo all their lives, and their granddaughter over three generations.
