What Happened to Mr. Cha?

With the image of a gentle and perfect man, Mr. Cha enjoyed immense popularity in the 90s but he is now a has-been who reminisces about his glory days and waits for someone to cast him again. One day, Mr. Cha visits a gym to take a shower after a stroll but the building begins to crumble and he gets stuck in the pile. Can he get rescued while maintaining his gentle and perfect image?
(Source: Netflix)