Fish-monger Masa is upset with Netto and his possé because they don't spend enough time outside, so he has them all work-out in the great outdoors! Meanwhile, the World Three has hatched another plan: they're using jellyfish viruses to have robotic fish attack the city! Netto and co. are soon on the run from a robotic shark, while Rockman and Glyde do battle with the jellyfish viruses. Netto eventually makes his way to the robotics aquarium, where he finds an ElecSword battle chip to defeat the jellyfish with.
English version title - Robotic Fish Gone Wild!
ＷＷＷ（ワールドスリー）のボス・ワイリーの指揮のもと、エレキ伯爵たちが計画したのはロボット水族館のウィルスによる乗っ取り。結果、町は暴走する魚ロボがあふれ大混乱。電脳世界にプラグインしたロックマンは、巨大な津波に飲み込まれそうになるが、突如謎のナビが出現する・・・。
