Welcome back to Uncle's historyWhat had begun with a duel against the Corpse King erupted into a biohazard battle for the kingdom! Between the resurrection of the Venom Dragon and a squad of wyverns, the royal cathedral is seeing more than double the dragons, but a dark savior may have appeared in the form of Mabel and her icy powers...And what's up with that contract Magatsu forged with Uncle...?