The leader of ACROSS, Il Palazzo, understands the challenges of achieving world domination. As a result, he devises a plan to conquer Fukuoka city with the help of his subordinates, Excel and Hyatt. The City Security force, comprised of a group of unremarkable men, a stern woman, and an army of robots, resists their assault. Despite instructions given to Excel and Hyatt that appeared to be simple, their incompetence results in disastrous consequences. Heppoko Jikken Animation Excel♥Saga, an animated series, chronicles the chaotic attempts of the ACROSS agents as they strive to become competent at their tasks.