Ango and Ryo spend more time with Summer Team B and find a solution to releasing the sailing boat from the rocks. Hibari expresses misgivings to Saotome about sailing with Ango and Ryo, however the combined group set sail to explore the island. Meanwhile, Takahiro and Ayu travel on together and he asks her to adopt a black puppy which is being bullied by the other dogs. As Summer Team B sails at night, Ryo deliberately closes the windows so that everyone succumbs to carbon monoxide poisoning. When Ango notices, gets Ryo to help him drag everyone on deck to revive them, not knowing that Ryo caused the crisis...