Physical education teacher Hojin and school nurse Siwon are childhood friends who work in the same school! Siwon looks after Hojin, who always has a lot of work. One day, Hojin suffers from leg cramps during class and receives a massage from Siwon. But the moment Siwon's hand touches his leg, Hojin feels it?!

A candid body conversation between two childhood friends begins!