As the moving vines continue ensnaring everything in their path, the Newswoman suggests for once for the public to panic as they invade the studio. On Patrick's idea, Reese speculates the D-Team probably changed the past somehow; after going over their adventures, Rex points out how they left the fire going in the Jurassic, and Ed explains on a whiteboard how the fire could have caused a chain reaction of the disappearance of the plants, herbivorous dinosaurs, carnivorous dinosaurs, and mammals that ate dinosaur eggs, ultimately preventing mammals from ever becoming the dominant species and leaving that role to insects instead. Returning to the present would do no good, but as they still can't choose their destination, they can't return to the past to fix things either; Reese tries to send the original files to repair the time systems, but plants break into the D-Lab and cut off the communication.
Though communication is cut, the transmission is still secure enough for Jonathan to lock onto and attempt to follow it back to the present day, risking certain doom in the temporal flux stream if he isn't perfectly precise. Meanwhile, Spectre is fawning over his six Cosmos Stones (and Seth for retrieving them), but slumps when Seth points out they now know the Detector doesn't work. The Backlander speeds through the vortex, Jonathan taking a precise turn to exit into the present, everyone shocked at the overgrowth, Zoe moaning how it's their fault. However, a swarm of giant dragonflies and wasps jam the ship's engines, forcing the D-Team (and, after some bug spray, the Alpha Gang with a lovesick Zander) to teleport down to the surface and head for the D-Lab on foot. Both groups are attacked by giant mantises, with Chomp ramming away the one attacking the D-Team. When the D-Team arrives at the D-Lab, they find everyone tied up in vines, but are attacked by the plants, Zoe and Rex getting grabbed.
Max escapes to the basement and has Chomp vaporize the plant's main root with Lightning Strike, freeing everyone in the D-Lab, and Jonathan zaps the bug surrounding the Backlander. Meanwhile the Alpha Gang, having forgot their Alpha Scanners, is saved from the giant mantis chasing them by Helga. Jonathan and Reese manage to repair the Backlander's time systems, restoring it to full working order. Returning to the Jurassic (now with Rod and Laura aboard), the Backlander crew sees their previous selves leaving, followed by the Space Pirates, and uses the ship's restoration wave to put out the fire; in the present, the giant plants and insects disappear. After Rod and Laura admire the Jurassic dinosaurs, the ship returns to the time vortex, but the Pterosaur is too saddened at the Space Pirates possessing 6 of the 7 Cosmos Stones to point the way to the last one, worried about her own doom if they win. Luckily, Rex thinks of uses his TPS to find their parents' location. Meanwhile, Seth has repaired the Detector and located the final Cosmos Stone in the Stone Age.
The Space Pirates go down and send their dinosaurs stomping through a primitive village to get to the volcano with the Black Cosmos Stone, but when the Backlander arrives and the D-Team teleports in, calling out their own dinosaurs to battle, Spectre becomes angered. He goes down and enters the fight with Brontikens at full size…
D-Team vs. Spectral Space Pirates
Ace attacks Gigas with Ultimate Wind, but it is countered with a head-on Spectral Lancer, and Ace falls after the collision, cracking the volcanic rock and releasing steam. Armatus uses Spectral Stinger against Chomp, but he outruns the attack, the Stingers causing the volcanic rocks they hit to release steam. Maximus then uses Spectral Punisher at a distance against Paris, who runs just ahead of the beam, which causes the volcanic rock it cuts to also release steam, Paris tripping and sliding as the attack stops.
To be continued…
(the Alpha Gang is being chased by a giant insect)
-Dr. Z: "What! What do you mean no one brought their Alpha Scanner down here with them!?"
-Ursula: "I thought Zander did!"
-Ed: "Me too!"
-Zander: "Same with me! Oh, wait, I'm Zander. That's not good."
- Despite the term "forest fire" normally being spelt as two words, this episode's title screen clearly displays it as only one word for an unknown reason.
- The episode's title (and spelling) could be a reference to "The Butterfly Effect", a description of the theory that minute changes could have enormous ramifications later on or far away, particularly where time travel is involved.
- Ed's explanation of the result of the fire is flawed. The Jurassic was known for periodic enormous firestorms, so a small blaze couldn't affect history any more than they would. Also, a single fire could never have spread across the entire world to do damage on the scale required, especially if the continents had separated by then. Finally, early mammals didn't in fact base their diet off of dinosaur eggs; they ate various combinations of fruits, leaves, nuts, berries, insects, and other things, and this diverse diet is likely what helped them survive the end-Cretaceous extinction. (At least it's more well-thought out and more well-explained than Ed's other ideas.)
- When Dr. Owen says returning to the present will make the Backlander crew go extinct along with them, this is clearly a dubbing change, as his blush and Ursula's reaction imply the original Japanese line was a comment towards her instead.
- This episode features another reprise of Zander's love song for Reese from Dinosaur Amour!.
- When Laura is looking at the wild dinosaurs and says, "Look at that big one over there!", she is seemingly pointing to Microraptor, perhaps the smallest dinosaur featured in the franchise; this line may have been dub-specific and a mistake.
- In the shot where Sheer tells the dinosaurs to make a path through the cavemen, her nails are extremely long, but when they were last (and later) seen they were short.