G.I. Joe Ninja Battles is a film that was released on DVD in late 2004, as part of the Ninja Battles set of G.I. Joe A Real American Hero figures. In it, the history of the Arashikage Clan, as well as the history of Snake Eyes and Storm Shadows rivalry, are examined through a series of trials. Scenes from both G.I. Joe Spy Troops and G.I. Joe Valor vs. Venom are used, with a brief period of new animation at the end of the movie.
Duke, who had been standing in the shadows with Snake Eyes during the Iron Masters story, steps forward to tell Tiger Claw that someday Storm Shadow will learn the truth about his family, and be welcomed back into the Arashikage Clan. Storm Shadow then appears to challenge Snake Eyes and Tiger Claw, who reveal that Kamakura and Jinx are there to back them up. Storm Shadow then reveals allies of his own, in the form of Slash, Slice, and Shadow Strike. The ninjas all battle in Iron Masters forge, until the villains finally escape. Duke then offers Tiger Claw membership in the G.I. Joe Team.Mizu The Trial of Water Water is considered to be shifting, formless, taking the shape of whatever confines it. The trial is designed to test a ninjas understanding and mastery of strategy. Hard Master gives each ninja a bowl of water, and each must get the others bowl without taking it from the others hand. Tiger Claw realizes that the strategy is cooperation, so that both may complete the task, by giving their bowl to the other. Instead, Storm Shadow chose to take the water bowl from Snake Eyes by tripping him, which was considered an act of weakness by the Hard Master. ........
Source: Wikipedia