As they arrive at the edge of the central crater, Bulkhead expresses second thoughts about setting the Dinobots free. Suddenly, Prowl spots tracks, indicating someone besides the Dinobots is on the island. By daylight, the Autobots arrive on the island and start exploring, with Fanzone coming ashore shortly afterward. That night, Prowl and Bulkhead take a cargo ship out to the Dinobots' island, with Fanzone pursuing them in a police department mini-sub.

Fanzone notices them whispering, figures they must be discussing something relevant, and decides to follow this new lead on his own. Behind him, Bulkhead and Prowl hold a quiet conversation about whether to tell Prime about their role in the Dinobots' escape, but decide to investigate the Dinobots' island themselves first. Ratchet doesn't think it's possible, but Prime notes they never did find out what happened to the escaped Dinobots. Just then, Prime spots Swoop on the security footage replay. Bulkhead mentions her self-defense lessons, to which Fanzone raises some objection, noting that hanging around Autobots might just be, oh, dangerous for a little girl. The Autobots arrive, and he asks if anything unusual happened yesterday. Captain Fanzone coordinates operations from the lobby of Sumdac Tower, checking security video footage and struggling with the operation of his mobile phone. Come morning, the police search Sari's room and question Doctor Sumdac.

He immediately contacts the police and the Autobots, and Optimus Prime orders everyone to roll out immediately. Shortly afterward, her father stops by to deliver a bedtime snack and is shocked to find her missing. I will make you one of my children of the night. She opens the window and is confronted by the Dinobot Swoop. She then goes to bed, but a shadow passing by her window makes her curious enough to get up again. She doesn't do so well, but undaunted, she continues to practice alone in her room that night.

Concerned for Sari's safety as possessor of the Key and knowing they can't be around every minute to protect her, the Autobots decide to give her self-defense lessons.

Survival of the fittest