As Elsie Swift, CEO of Harmonia Group, is about to leave for a business trip, she receives a desperate SOS call from her daughter, Tina. At her training center, Tina was discriminated against and kicked out of class by her teacher simply for drawing a bicycle for her homework. Through a series of unfortunate events, she becomes trapped in a refrigerator inside a dark room, her life in grave danger.
Elsie rushes to the center to save her daughter, only to face relentless obstruction from the biased teacher and other parents. Although Tina is eventually rescued, the incident leads Elsie to discover a dark, long-hidden secret kept by her seemingly loyal husband...
