A courier who likes to sneak into a customer's home is accidentally involved in a murder case.

Allen, a young man who dreams of becoming a novelist but does nothing meaningful in the real world. Due to the lack of real life experiences he faced an writer's obstacle. Rather than staying unemployed, he becomes a delivery man. and starts to have wired connections with strangers. He always can't get his curiosity satisfied until he meets another delivery man named Jet who shares the same hobby as he has......—Anonymous