In a string of bad luck while out shopping, Ryotaro's bike is stolen and he becomes a hostage of the thief in a public bathhouse along with another man named Shūjirō Hakamada. While Ryotaro is held hostage, his sister is contacted by the robber and the Whale Imagin begins attacking fishermen. After much confusion, Hana and Ryotaro both end up in the bathhouse after a failed attack on the Whale Imagin. When Airi enters and begins to make lunch for the group, the SWAT team arrives. However, it is revealed that the entire situation provides no threat as the gun is fake. The Whale Imagin appears again and Urataros fights it, only letting it escape because of less-than-favorable fishing conditions. Hakamada discovers that the targets have been his former co-workers, and Ryotaro investigates Takonoko Heavy Industries. He discovers that its former president, Kōsaku Higuchi, is the Imagin's contract holder and Ryutaros takes over in an attempt to kill the president, only to be distracted by the Whale Imagin who is driven away easily by Gun Form.