Aki is feeling impatient. So far, she has not passed the underwater test yet and is worried that summer break will soon be over without her being able to dive yet. Meanwhile, Masamune asks a local, Osanai Rokuro (Fishing Co-op president) to show him the way to Sodegahama. When they reach the village, Osanai proceeds to the Co-op where Aki and the Ama-sans are. Aki sees old photos of past Amas. Some of them were topless. The older folks tease Aki, saying that rookie Amas go diving topless for the first few years. "So you should do it, too!" Aki believes it and is shocked. She tells Natsu she does not want to dive anymore but was later reassured that it was just a joke, and that the old practice of diving topless was all in the past. Natsu tells the story of how her husband fought against this practice. "He was so cool and so I decided to marry him!" Meanwhile, as Haruko is dropping the divorce papers in the mailbox, Masamune arrives. He is surprised to learn about the divorce but Haruko does not explain why. "It's all in the letter that I mailed to you." He also learns about Aki's desire to be an Ama, and was against it. He goes over to the beach to reprimand her but Natsu gets in between them. It is the first time Masamune meets his mother-in-law and tries to apologize. They did not notice that Aki is gone. She has dived into the sea again.
海女修業にいそしむアキ（能年玲奈）は、ある写真を見てショックを受け、海女になる自信をなくしてしまう。そこで、海女の歴史や、祖母・夏（宮本信子）と祖父で遠洋漁業の漁師・忠兵衛（蟹江敬三）のなれそめを聞くことに。そんな折、アキの父・正宗（尾美としのり）が、突然、町に現れる。正宗はタクシー運転手で、妻・春子（小泉今日子）とアキを連れ戻すため、はるばる東京からやってきたのだが…。
