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A cohabitation of young men and women begin at Signal House where filled with rosy expectation of love and romance blooms. The “Predictors” with vast experiences in dating and love will detect potential lovers in the Signal House. The most exhilarating love game begins now.

Dong-Joo (Park Ha-Sun), who is tone-deaf, has a crush on a man and attempts to improve as a singer to become closer to him. Shing-Heung (Yoon Sang-Hyun), an instructor at a tone deaf clinic, by chance helps Dong-Joo and begins to like her. Meanwhile, Bo-Ra (Lim Jung-Eun) is a friend of Dong-Joo who also tries to helps Dong-Joo.