Double Barrel Twins

Cam and Shaen are orphans. They lost their parents at a young age and resorted to thievery to survive. Cam, the more serious one, and his brother Shaen, the more enjoying one, rob a house and find two guns inside. The guns are heavy, but powerful. One shot can destroy a small car. They keep the guns in hopes to put them to good use.

They're contacted later by a shadowy organization known as the Lotfires. Cam and Shaen accept and are put in a squad of above-average members; Sera, Jayson, Kelvin and Teddy. They're known as the Advanced Individuals Squad, or simply AI Squad.

Cam tries to lead them, but the four are hesitant to accept him as their new squad leader. A fork in their road comes when a new group of mysterious figures threatens the Lotfires and Cam's squad. Together, they try and face their faceless foes with as little friendly casualties as possible.

But not everything goes as planned...