As O'Clock and his accidental allies Tiger Bunny and the Rapper try to escape the underground arena, shadowy figures observe the chaos from afar. O'Clock takes on a hooded fighter who seems to be targeting him specifically. Back in the present day, Pop has been rescued, but Koichi and his friends have only a brief respite before the villainous Number 6 puts a terrifying new plan into action. In true vigilante fashion, Koichi must evade the law in order to protect Pop...