The T. rex carried out a heavy assault on Indominus, and the two dinosaurs engaged in a ferocious battle. Though the T. rex initially dominated the fight, she was eventually brought to the ground by the hybrid's strength, destroying the Jurassic Traders Outpost and almost killing Owen Grady, Gray, and Zach. The Indominus almost delivered the killing blow before she was attacked by Blue who was still alive from the onslaught. This allowed the tyrant to return to her feet and grab the I. rex by the neck, pushing her into many of Main Street's buildings, all while Blue assisted the Tyrannosaurus. Finally, she was flung to the edge of the Jurassic World Lagoon. The attacks from both the T. rex and Blue were so heavy that it caused the hybrid to actually bleed and pieces of metal were even sticking out of the left side of her torso. The I. rex got back up from the ground, however, still ready to fight the theropods once more. While she let out a roar, the lagoon's resident Mosasaurus detected the hybrid and proceeded to emerge out of the water to pull the I. rex under the water to her death.