Hwang Jae-soon

Ms. Maeng, a small-town teacher, unexpectedly joins the team responsible for creating South Korea’s most important exam: the College Scholastic Ability Test. She thought it would be all about academic prestige and scholarly debate but instead finds herself locked away under spy-level security, her phone confiscated and surrounded by office politics. Can this unlikely underdog turn test stress into test success, or just test everyone's patience?

Ji-woo, an outcast at a prestigious private school, meets Hak-sung, the school janitor who is actually a mathematical genius who defected from North Korea.

The four stories that possibly or impossibly can be happened in the pension; The parents who lost their child go to the pension with poison where the killer stays with his family; The husband and wife on a trip who are growing tired of their married life and the wife’s hidden secret reveals when they reach the pension; A woman who demands to stay a night at a particular suite to save her kidnapped child; A man who is asked to manage the pension for a night, he organizes fantastic night with his girlfriend, but things go wrong…