From the back of the book:
A.C.E. Agents! is an adventure game set in a universe of spies, counterspies, running battles, high technology, and intrigue. As an A.C.E. Agent, you'll battle P.Y.T.H.O.N., a group of evil criminals out to dominate the world. The only things standing between P.Y.T.H.O.N. and world domination are you, your fellow A.C.E. Agents, and the fact that the Elite Council of P.Y.T.H.O.N. can't decide what the acronym of their name stands for. So buy this game, join A.C.E. and save the world!