Ki Moo-Hyeok, a lawyer with a high winning rate, only cares about money. Due to a murder case at a high school which he deals with, his reputation as a lawyer hits rock bottom. To regain his good name as a lawyer, he sneaks into the high school and work as a temporary teacher. He tries to reveal a secret which the students have, and gets involved with Teacher Ha So-Hyun, a P.E. teacher who loves her students. They then face the students'secret.
A comedic mystery that follows two genius high schoolers and a female police detective as they solve cases that arise while following the disappearances of the boys’ parents.
Min Joon owns a food truck and has found a bustling, high-traffic location to park his truck at Gangwon Beach. But he keeps crossing paths with Joon Young, a mysterious and wacky young woman who makes things difficult for him.