A mother, Soon-hee, and her son, Hae-seok, lived in a village for a long time. One day, they are told that sea levels have risen and that they have to leave the village. They begin to learn how to swim together to stay in the village. Meanwhile, Soon-hee's friend Bok-young gives Soon-hee something to help her swim...
Choi Jeong-won
Song Min-hyuck
Sohn Young-sil
Kang Ji-won
