The future. Jade, the strongest combat android, was about to be transported to a conflict zone.

However, due to a mistake by the Time-Space Administration (accidentally falling asleep), he is sent to modern-day Japan, a dimension free from conflict. With communication cut off and unable to return, and having lost his, purpose in life - her mission - Jade ends up living with the family of a little girl named Lulu, whom he meets by chance.

This marks the beginning of an unprecedentedly challenging mission: an encounter with "everyday life"…