Dr. Kota is charmed by a popular TV host that comes to the Kaishin-maru to film a television segment. Learning that her father is suffering from a serious illness, Kota tries to help her parents harvest their family owned Mandarin orange orchard.
Kota and the crew visit Mioki Island, where Kota meets a beautiful school teacher, Kaoru. The two of them, along with Kaoru's student, Ryo, go on a field trip together, but Kota tries to turn it into a romantic date.
Sezaki Kota is hired as the new doctor for the Kaishin-maru, a traveling boat clinic. However, the next day he falls in love with a woman on a neighboring island and decides to quit his job and marry her.