The storyline for this set of seasons is this. Kevin goes home and everyone experiences peace for 7 years. Then in 1998, a hacker named Dexter (not in relation to the boy in "Dexter's Labaratory") discovers Videoland, and chats with Dr. Right. He works for NASA, and his rival Angela Aino decides to ruin him by resurrecting Mother Brain in the world of 3-D games. She hacks in and does so, but Dexter tells his friend, so he alerts the N Team, only to realize that they disbanded after Kevin went home. Since there is no Kevin Keene in Dexter's world, he comes up with the hottest champion there, an 8-year-old named Keisha Davenport, and he rounds up the champion type-gamers as well (type-gaming means the best at fighting, role-playing or puzzle games). So everyone, including Dexter himself, goes to Videoland to help Lana, and bring back Kevin, who somehow became 15 years old again through the Ultimate Warp Zone. They also round up the stray N Team members in this series and ultimately defeat Mother Brain for good. How's about that?
There will be love triangles as Armond, the puzzle champ, gets involved with Lana, and Carrie, the sports champ falls in love with Kevin, making him feel uneasy when he gets his memories back. The six champs call themselves the Defenders of the Realms, and they and everyone else do the superhero thing when things heat up.