A trip to the beach turns out to be more than expected for two people who are mourning the losses of their beloved. Perhaps a mysterious girl known as the "Umi Warabe" can help them to heal their wounds and move on with their lives. Matsunaga Yoshihiro is the chaperone for a group of high-school students on a summer trip to the beach. One night he saves one of the students, Morisawa Nao, as she attempts to drown herself. She had been on this same trip a year ago, with her fiancee, who was later killed in a plane crash. As these two get to know each other, we find that Yoshihiro also has a painful secret from his past. Watching over everything is a mysterious young girl who somehow is always there at decisive moments.

The light-hearted Working!! franchise comes to a close in this final episode of the concluding season. Will Aoi Yamada get the closure she so desperately needs with her distant mother? Will the relationship between Yachiyo Todoroki and Jun Satou continue to remain stagnant and awkward? Perhaps even Souta Takanashi and Mahiru Inami will take a step forward in deepening their eccentric friendship. And in the end, Wagnaria Restaurant might finally get a new chief! Beautifully connected, all these events intertwine to give these characters a final ending to their stories.

High School boy Kenichi Watanabe is crazy about his MBX50 motorcycle. He and his buddies organize a motorcycle club, which they call Culture.

Short episodes included with the Blu-ray/DVD volumes.