Curtain Up, Class! Episode 3

Kangnam comes to Mungyeong to join as a new teacher of the acting class. He arrives when Tae Ri and Hyun Wook are busy in the class, so he tries to greet them in a mischievous way. The first thing he does for the first encounter with them is to play hide-and-seek. But when they are back from the class, he just stays hidden in the corner. Will his plan to surprise them be successful? And what role will he get from the class? (Source: Viu)