SuperGrid is set in a near future where mining conglomerates have turned Canada into a wasteland. Two brothers must travel the same road that claimed their sister's life in their quest to deliver mysterious cargo. En route they must contend with road pirates, rebel gangs, and each other.

　　Johnny Price was a high-ranking officer in the  military and a decorated war hero; but after  being convicted of a crime he didn't commit, he  was dishonorably discharged and has never  been able to live down the disgrace. When a  band of terrorists seize Hoover Dam and  threaten to blow it up if their demands are not  met, Price is called in and given a shot at  redemption as the only man who can fend off  the invaders and prevent a disaster that could  cost thousands of lives.