Qian Ting Zong Dong Yuan: Haidi Liang Wanli
Japanese title: 潜艇总动员：海底两万里
Alternative titles: Qianting Zongdongyuan: Haidi Liang Wanli, Happy Little Submarine: 20000 Leagues under the Sea
Type: Movie
Source: Unknown
Episodes: 1
Status: Finished Airing
Aired: Jun 1, 2018
Duration: 1 hr 15 min
Rating: PG - Children
Genres: Adventure
Demographics: Kids

Ali, Beibe and Meisha, submarines, have befriended a group of adorable sea creatures at the bottom of the ocean. After they tell Ali about a frightening legend of a mysterious sea monster that supposedly disrupted the ecological balance of the ocean, he leads an expedition team with Beibe and Meisha to find the creature and return the balance.

(Source: Wikipedia)