- Dexter: [via hologram] Despite our best efforts, Tech Square has been lost. But this war is not over yet. Not by a long-shot. Our time-travelling friend here is just the hero we need. Between Mandark and Numbuh 2, I am sure you will be able to rebuild my time capsule. Don't worry about me. I will be fine. Get back to Sector V and to safety. Dexter, out.
- Numbuh 2: Alright, everyone! Next Stop Hero Square, Sector V!
- Buttercup: [to the player] Dexter has disappeared. You gotta see if he's in the infected zone. I'll check out here. There's no time to lose! The most infected areas on the planet are called infected zones. Thanks to Fuse's Terrafuser machines. Fusion Matter is totally out of control inside. Good thing Dexter set up energy shields to contain the infection.
- Numbuh 5: [after defeating the monsters] You know, I just realized who you are. You're the kid from the past that Dexter told us about. Well, you're in a world of trouble now. Look up in the sky. That's Planet Fusion, ruled by some nasty guy named Fuse. Fuse has covered the world with gross green goo, and those disgusting Fusion Spawns are wrecking everything.
- Ben Tennyson: Fuse's monsters have evolved to our planet. You should see some of 'em! They use things called Terrafusers to infect everything with goo. If the infection gets bad enough, Planet Fusion will absorb our world.
- Dexter: [meeting with the player] It is you! I knew we would meet again! My stupid sister messed up the time-jump sequence and destroyed the time capsule. We need to get you back to the past so you can save our world.
- Dexter: [preparing to send the player into the future] Alright, I'm powering up the main engine now. You may feel a little bump. Wow, are you seeing these readings? A fine day for science, indeed! Prepare to launch. Three, two, one...
- Dee Dee: [off-screen] Ooh, what's this button do?
- Dexter: Dee Dee, no...!
- [the time machine rumbles, then everything goes black]