The game that Momo and Zuma finally managed to finish was in reality a cursed trunk containing a terrifying demon that they misunderstoodly liberated! Falling under the grip of the terrible entity, Zuma and the power of Umbrella-Boy are unleashed! While Momo is seriously wounded, everything seems lost... until Rokurô arrives at the rescue, accompanied by the police officer of the nearby station! Okarun will he be able to recover his precious ball and terracer Umbrella-Boy?!