Ildan tteugeopge cheongsohara!!

Jang Sun Kyul sufferes from mysophobia and operates a cleaning company. He meets Gil Oh Sol, who has a bright personality, but does not mind getting dirty. With the help of Oh Sol, Sun Kyul faces his fears and falls in love with her. Meanwhile, Choi Koon is a mysterious man who lives on the rooftop of Oh Sol's house and is known for being a free spirit.