Nagasaki in 1986. Hisada, who lives with her affectionate parents and her younger brother, although there are many quarrels between couples, is a fifth grader who loves Yuki Saito and Exogini. Hisada decides to go to Boomerang Island to "see the dolphins" with Takemoto, whose house is poor and avoided by his classmates. Drowning in the sea, getting entangled in the Yankees, and having a lot of trouble, but as the friendship between the two deepens as a result of this adventure, a sad incident that presages farewell occurs.
Is Sabakan on Netflix? Yes! The movie Sabakan is now on Netflix in the countries listed below.
| Sound | Michiru Oshima | Original Music Composer |
| Writing | Tomoki Kanazawa | Screenplay |
| Directing | Tomoki Kanazawa | Director |
| Writing | Jun Hagimori | Screenplay |
| Production | Mitsuru Sato | Producer |
| Production | Michi Iijima | Executive Producer |
| Production | Jun Takahashi | Producer |
| Costume & Make-Up | Reiko Matsushita | Costume Designer |
| Camera | Yusuke Suga | Director of Photography |
| Editing | Narihiko Kôno | Editor |
| Art | Takuya Okada | Art Designer |
| Production | Tomonori Fukuda | Line Producer |
| Lighting | Yamato Watanabe | Lighting Director |
| Sound | Kotaro Marubashi | Music Producer |
| Art | Takayuki Sato | Set Decoration |
| Sound | Masaharu Tanabe | Sound Recordist |
| Directing | Kazuya Shintani | Assistant Director |
| Costume & Make-Up | Asako Nagashima | Makeup & Hair |
| Directing | Dan Ogawa | Assistant Director |
| Crew | Emiko Togawa | Script |
| Costume & Make-Up | Kayo Hosomi | Hairstylist |
| Production | Tamotsu Kosano | Executive Producer |
