Electric Flower Garden!

English version title - The CyberGarden of Doom! A new Darkloid member, Plantman, is up to no good. He's growing thorny life-sucking weeds all over various networks throughout Japan, trapping net navis (such as the World Three navis and Roll) and using them as fuel for the Darkloids. Netto and Rockman investigate, but they get a little bit of help from an old friend, Hinoken!