Shin Ye-eun (신예은) is a South Korean actress, best known for her role in the web series A-Teen and its sequel A-Teen 2. She also starred in the television series He Is Psychometric, Welcome, and More Than Friends.
A boy falls to his death at school, but Ok Chan-mi does not believe that her twin brother, Park Won-seok, committed suicide. Chan-mi transfers to her brother's school, Yongtan High, and meets Ji Soo-heon, who witnessed her brother's death. A "hero," who avenges bullied students, appears at Yongtan High. Chan-mi speculates that it may be connected to her brother and starts looking for this hero.
Lee Ahn has the ability to read a person's secrets as soon as he touches them. He meets a woman who has secrets that she desperately tries to hide. The two team up to bring down criminals.
The series is about an incident that takes place when the owners of the boarding house called 'Guest Summer Palace', which breaks stereotypes, and boarders with secrets gather to find Lee Seol who disappeared 13 years ago.