- Narrator: Jake
The Animorphs steal a Bug Fighter, but run afoul of the Blade Ship, leaving them stranded in the Amazon Rainforest— several hours in the past.
Tropes:
- Accidental Time Travel: The Sario Rip is caused by the Bug fighter's Dracon beams hitting the Blade ship's Dracon beams, generating an explosion that sends both ships back several hours.
- Ant War: To get the army ants off of Rachel, Jake uses another colony of army ants, which works, as the ants stop trying to eat Rachel and go to war with the other colony.
- The Bad Guy Wins: The Animorphs are no match for Visser Three and when Jake returns to the moment he first planned to steal the Bug Fighter, he gives up on the plan, knowing it will fail. As such, the Yeerks successfully cover up the existence of the crashed Bug Fighter.
- Bag of Spilling: Jake mentions at the end of the book that he's tried to morph monkey and jaguar but can't. Since he's not the Jake to acquire them, they're just not in his repertoire.
- Book Dumb: Ax admits he wasn't paying attention in school when he was supposed to learn about Sario Rips, limiting the information the Animorphs have on how to fix one. In Animorphs: The Hork-Bajir Chronicles we find that Andalites think of science as more the domain of females and that in Animorphs: The Andalite Chronicles the Fleet is trying to train warriors to have a basis in science but that there's some resistance to the idea.
- Call-Back: Thanks to having morphed fly to spy on Chapman in Animorphs: The Andalite's Gift, Cassie has had more experience in understanding human voices than the others. She points this out when Rachel wonders how she can make sense of the noise.
- Coming in Hot: Early in the book, peregrine Jake comes in for a landing but misjudges the distance and ends up tumbling head over talons. Soon after that, both the Bug fighter and the Blade ship are damaged in the Sario rip-causing explosion and spiral down into crash landings.
- Curb-Stomp Battle: The Animorphs have no chance of beating Visser Three. Jake using a monkey morph, is able to wound him with a poisoned spear, and all that seems to do is make Visser Three angry as he strangles Jake instead of capturing him.
- Eaten Alive: Rachel as a grizzly bear falls unconscious on top of an ant mound. By the time she wakes up, they're eating her inside her eyes and ears.
- Mighty Roar: Jake roars as a tiger to draw the attention of several Hork-Bajir Controllers. The rainforest momentarily goes silent for miles as the roar echoes around.
- Mischief-Making Monkey: The spider monkey morphs are described as being "like a human, but more excitable". A minute after morphing, the Animorphs get caught up in the monkey's ability to frolic through the trees.
- Nature Is Not Nice: Rachel is nearly killed by the rainforest fauna, first by army ants eating her alive, then by a shoal of piranhas. She screams about how the rainforest people want to save is a deathtrap and how she wouldn't mind if the entire place was paved over.
- Negative Space Wedgie: A Sario Rip is a rift in time caused by a large energy output, like two Dracon beams colliding. The rift can transport those near it to the past or future, and must be collapsed in order to fix the paradox.
- Never Shall The Selves Meet: Even worse than that, meeting each other isn't necessary for the time paradox to annihilate the past and future versions of the characters.
- Not-So-Harmless Villain: After spending his last several appearances trying and failing to defeat the Animorphs, Visser Three successfully lures them into a trap where he inflicts a Curb-Stomp Battle and kills Jake. The Animorphs only make it through because killing Jake returns him to the moment when he attempted to steal the Bug Fighter, which stranded the Animorphs in the Amazon, and he chooses to back out of the plan, knowing it had put the team in a situation they couldn’t win.
- Piranha Problem: Rachel runs into a stream to get rid of the ants eating her, and is almost immediately set upon by a shoal of piranhas. As with most pop culture piranhas they're basically waterbound Taxxons instead of fleeing the large animal blundering into their midst and having a few of the bolder fish approach and nip at her.
- Poisoned Weapons: Cassie makes note of the frog poison the natives use on their spears to make them lethal. Jake later uses a poisoned spear to take down Visser Three.
- Snakes Are Sinister:
- Jake's tiger is nearly killed when an eyelash viper bites him unprovoked.
- Visser Three acquires an Amazonian snake to search the jungle. This contrasts the Animorphs, who use monkeys and jaguars.
- Somewhere, a Mammalogist Is Crying: At the climax Jake is able to fling a spear because his monkey morph, having humanlike shoulder anatomy thanks to being a brachiator, can throw things. That flexible shoulder joint is part of why humans are good at throwing overhand but it's a lot more complicated than that, and even chimpanzees can't throw with the power and precision humans can develop.
- The Story That Never Was: The Animorphs decide to steal a Yeerk Bug fighter in order to fly it to the White House and expose the Yeerk invasion, but an accident results in an anomaly known as a Sario Rip being created, where two alternate versions of each person involved exists at the same time and will be eliminated at a specific time, and also results in the Animorphs getting trapped in the Amazon rainforest along with Visser Three and his underlings. However, Jake gets killed by Visser Three before that time, thus all of his memories snap back to the slightly younger Jake about to investigate the Bug fighter (he's the only one to have vivid flashbacks to before and after the Sario rip throughout the novel, possibly because he was the last to die). This time, he decides not to go through with it.
- Temporal Paradox: The adventure gets erased from existence when Jake snaps back from the future and aborts the mission. He later finds he can't morph into the monkey or the jaguar, as he never acquired them in the new timeline.
- Universal Driver's License: Ax arrogantly says that as an Andalite, no Yeerk technology is beyond him. He'll be able to fly even an experimental Bug fighter just fine! He was a bit overconfident and the fighter was made for a Taxxon pilot, who has more arms than he does, but with a little lurching is able to get it to do more or less what he wants it to do.
- The World Is Just Awesome: The Animorphs have this reaction as they transverse the rainforest as jaguars. Rachel even changes her mind about paving the forest over now that she's an apex predator who has nothing to fear from it.
