Together with Nakajima Atsushi, Izumi Kyoka begins work as a new employee of the Armed Detective Agency. As the two of them are adjusting to their duties, Kyoka's former mentor in the Mafia - Ozaki Koyo - suddenly appears to take Kyoka back! No longer able to avoid confrontation with the Mafia and the Guild, the Agency prepares to resist to the bitter end under Fukuzawa's orders. The curtains rise on a pitched battle between three organisations of Ability Users!