The Kingdom of Science members launch an attack on the islanders aboard the Perseus, but Moz isn't far behind and Senku and the others are forced to retreat inside the vessel. Ibara has them cornered, but Senku unleashes his Joker card.

Much to Ibara's shock and dismay, Senku devised a plan and managed to escape petrification. Now the two enter into a head-to-head battle for control of the Medusa device.