In the 1980s, Hyeon-soo, who is from a rich family but causes all sorts of trouble, barely makes it out of junior high and makes it to the next grade where he steps out of the 'Hurricane's' line.
Jung-Jin is a criminal profiler and he came from the FBI in the United States. Yoo-Min is a detective and he graduated from the top police university, but he is more interested in women then arresting criminals. Jung-Jin and Yoo-Min are called to the special investigation headquarter for a secret meeting. There, Jung-Jin and Yoo-Min receive an order to take down the boss of a criminal organization. The crime boss, with the help of people in power, appears untouchable.
Novelist Jeong-seok is looking for his missing wife. A woman appears in front of him and suggests that she can find his wife. Meanwhile, some people approach him and ask him to find missing people. They find themselves becoming chased at some point.
Lee Yong-gu es un hombre con problemas mentales: tiene un coeficiente de inteligencia de un niño de 6 años de edad, que es casualmente la edad que tiene su hija, la inteligente Ye-sung. Ambos llevan una vida feliz, pues Yong-gu se gana la vida trabajando como encargado del aparcamiento en un supermercado local. Pero un día, cuando la hija del comisario de policía muere en un extraño accidente, Yong-gu, que es el que encuentra su cadaver, es falsamente acusado y condenado a muerte por el secuestro, asalto sexual y asesinato de una menor de edad. Ye-sung es enviada entonces a una institución de menores, y Yong-gu es encarcelado y asignado a la celda nº7, en una prisión de máxima seguridad.
