Tinker Ticker

Park Jung-gu sends out homemade bombs to people he finds online who are likely to use them, yet these devices are unused. One day, Jung-gu meets Lee Hyo-min, a delinquent student at his university and sends him a package. Soon an explosion in a delivery truck hits the news. Before long, Hyo-min discovers who is sending him the packages and the two form a tenuous relationship. However, Hyo-min's unpredictable behavior becomes dangerous and Jung-gu finds himself caught in a situation that he can no longer handle.

• 
  Byun Yo-han

  Park Jung-gu
• 
  Park Jeong-min

  Hyo-min
• 
  Kim Hee-chang

  Professor Baek
• 
  Oh Chang-kyung

  Detective Oh
• 
  Lee Si-won

  Si-Won
• 
  Kim Jong-goo

  Managing director Kim
• 
  Park Seong-il

  Han Gyu-nam
• 
  Park Hye-jin

  Interviewer