Min-ji who just turned 20, lives on the street day by day, doing a part-time job she stumbled upon after running away because of a conflict with her stepfather. Then one day, Min-ji gets to know a newlywed couple, Mary and Soo-hyeok. The couple clothed Min-ji in warmth like no one else in the world, and as they took care of her in their different ways, Min-ji makes a statement of harsh determination.

Ji-cheol is a job seeker who only plays and eats, and is the boyfriend of Eun-je who runs a small store. Meanwhile, Joong-hoo, a hikikumori, became a regular after accidentally seeing Eun-je in the store. She is mistaking her kindness for her affection for herself. Joong-hoo started stalking her SNS every day. In the end, after approaching Eun-je with an innocent face, he succeeds in locking up Eun-je. As Eun-je disappears and the money supply is cut off, Ji-cheol is eager to find Eun-je. Ji-cheol, who is sad about money rather than worrying about Eun-je's safety, tries to lure Mi-seon out of her pocket money. Eun-je, who saw the scene of these two people's affair through a hidden camera, disarms Joong-hoo while drinking with him, thinking that she should somehow get out of there. Eun-je eventually escapes. Feeling empty without Eun-je, Joong-hu confines Mi-Seon, who ignored him. Three months later, someone came to Joong-hu's house and then…

Hyun-jin is always frustrated with his wife who always refuse her, saying she's tired. One day, Hyun-jin drinks with his friends, Min-seok and Jin-gi, and got a massage together per Jin-gi's suggestion. But then, he falls in love with the special service, and after that, Hyun-jin goes back to the massage parlor whenever he has time...

Jae-kyung is embarrassed and runs away after seeing someone talking to herself at a bar. Did she live in her next room? Yuya and Jae-kyung, who are free from misunderstanding, are rapidly approaching. Soon, they will develop into a relationship with each other. However, the new relationship at the boarding house causes all relationships to break. To make matters worse, Jae-kyung misunderstood Yuya's appearance to share her concerns with Ken. Can their relationship be restored?