![](https://image.tmdb.org/t/p/w92/jh3IFeOKS0icrgF2R5U63XYj7cl.jpg)
Mermaid princess Sophia appears in Nobita's yard. Visiting her underwater home, the gang joins a mer-tribe battle and searches for a mythical sword.
Wasabi Mizuta,
Tomokazu Seki,
Fubito Yamano,
Subaru Kimura,
Rie Tanaka,
Chiaki,
Yumi Kakazu,
Megumi Oohara,
Mayumi Iizuka,
Shihoko Hagino,
Mayumi Izuka
Added on HBO 2022-06-07.