Someone is sending anonymous love messages to Kang Yoon Ah, and she wants to discover which one of her three classmates is behind the texts.

Choi Yeon, who is rumored to be a lesbian, doesn't care about the rumors. However, she feels special about Ha-gyeong's friendly manners. Choi Yeon gets confused when the rumors about her become true.

A new virus (a.k.a “fantomal virus”) is transmitted to a small rural village. Dasol, a three-month nurse working in the village hospital, is being workplace bullying (a.k.a “burned”). In the meantime, Dasol begins to educate a new nurse Eunbi earlier than expected due to the poor ward situation.