The sushi restaurant owner fell in love at first sight... with a mermaid! Hae-beom is often misunderstood as a gangster because of his stern look. Sang-a, a customer who helped Hae-beom once, was a mermaid. Sang-ah needs human saliva to get legs. Hae- beom selflessly proposes a kiss to Sang-ah, once a day, every day. "Sang-ah only needs legs... but won't Sang-ah like me someday?"