Due to being attacked by a legendary sea monster, Deepsea Base launched an arrest plan. However, Comma discovered that the sea monster was actually just a cute little dragon. With the unremitting efforts of Comma and his friends, they finally resolved the misunderstanding of the sea monster and reunited the little dragon and its mother.

Unfortunately the movie Happylittle Submarine：The Adventure with Dragon is not yet available on Netflix. Follow us on Facebook to see when Happylittle Submarine：The Adventure with Dragon becomes available on Netflix!