Unemployed and depressed, Mokhwa decides to commit suicide by drowning. But first he must sign up for swimming lessons to use the pool. Just when he jumps in the water and lets his body sink...he is saved by his swimming teacher, Changgyeong. Mokhwa eventually begins falling for Changgyeong, a handsome man with a great body and amazing skills in bed. But the closer he gets, he can't help but feel there's something a little strange about his teacher... (Source: Lezhin Entertainment)