Takeru Hibino was in a sex-only relationship with his boyfriend, Kazuomi and so, leaves him. In order to forget him, Takeru decides to take part in a male-only tour around the world. His best friend, Iida Shinnosuke (who suggested the trip) and his twin brother (with a huge brother-complex), Shinobu, will be tagging along with him. Also, on the tour will be a sports writer, a reclusive writer, an enthusiastic student, a kind doctor and a strange guy who seems to be watching Shinobu. Strange and interesting things happen on the trip. In the end, will Takeru be able to forget about Kazuomi and find new love?