The great adventures of life and human connections in contemporary Korean society, following a formal baseball player, a sleepless student, a new hangman, an imprisoned gangster, and a mysterious father and daughter.

The web drama revolves around delivery girl Kwak Doo Shik who is well-versed in martial arts. She teams up with Do Ki Hwan, the delivery agency manager, in order to find her mother. In the process, they run into conspiring aliens who have invaded Earth.