Initially they’re all strangers to each other and they end up being reunited in a secret HQ. They were taken out of more or less difficult situations by a certain "Boss" to whom they all pledged loyalty to get out of their misery. They will then be led to cooperate with each other to carry out missions. They all signed a contract that included many conditions. Will they be able to respect them ? Many secrets will be born within this group of mercenaries. ! This is not the official summary!