Introduction

After a series of explosions across the country they called the Big Boom, Strikeforce Agent Kim Ro Woon and his team are one of those sent to investigate. When they encounter a survivor in Incheon who seems to have possessed uncanny abilities, the threat of mutant survivors emerge from the rubble.

In a new world of mystery and of superhuman abilities, Ro Woon must make terrible decisions if he means to keep his oath -- to protect the lives of the citizens of the Republic. To find the truth to what really happened, Ro Woon enlists the help of his team and a few mutants affected by the Big Boom.

Together, they will be known as The Unit.