In the near future, while decoding the human DNA, scientists found a strand of DNA that was very similar to that of an wolf. Especially people like professional sports player or military personels. But people with this particular gene relatively shorter lifespan than that of a "regular" human, like you and I.

A corporation named" Phyan(Phian, Fyan) Pharmeceutical" delevopes a vaccine called "Epocine" for this genetic disorder which became known as "DieWolf Syndrome." While producing Epocine, Phyan Pharm. developes "Anti-Epocine" and secretely supplies it to French army.

French Army, starts another division of mercenaries called "Wolfteam" and globally recruits personels. Only requirement was a basic physical and blood test. The selected mercenaries ranged in age and physique. They also followed the mercenary rules of not getting punished for crimes at any places.

Wolfteam used the "anti-epocine" and they with their super human strength, they were unstoppable. Their fame grew bigger and bigger, while french army was losing their control over the wolfteam.

Wolfteam, often disobeyed their orders by anihilating everything even after completing their initial assignment. They were uncontrollable and they did not follow the rank system but followed their own rank. Their basis of their leader was based on who was the strongest; Alpha Leader.

French Army starts to investigate for mental side-effects of anti-epocine on the wolfteam. Then the "incident" occurs. It was when members of wolfteam fought amongst themselves and kills 7 people. This caused major problem in the word and Phyan Parm. and the Corporal investigators were sent out to investigate, only to be slaughtered by the wolfteam.

This horrific incident caused wolfteam members to hide from the government and starts to live in the "underworld."

Now, they flee from the French Army and live as a hired mercenaries.