From the back of the book:
Welcome to A.C.E., the Alpha Commandos Echelon, America's front line against techno-terrorism! A game of superspies and technoadventure and now, of SuperAgents.
A game where your press releases are as important as your Super Powers. Fight the arch enemy of A.C.E., P.Y.T.H.O.N. The only things standing between P.Y.T.H.O.N.'s Supers and world domination are the A.C.E. SuperAgents and the fact that the Elite Council of P.Y.T.H.O.N. can't agree on what the acronym of their name stands for.
Join A.C.E., become a SuperAgent and kick some P.Y.T.H.O.N. butt!
A.C.E. Supers is a Supplement and Sourcebook for the A.C.E. Agents! role playing system.