A tropical monsoon storm hits the island, and most InGen employees leave, except for John, Robert, and chief systems engineer Ray Arnold.
During the storm, Dennis shuts down park security (except for the raptor fences), and as a result, the Tyrannosaurus breaks through the deactivated electric fence surrounding its pen, devours the stranded goat, and wrecks havoc upon the roadway, attacking Tim and Lex hiding in the car. Alan ignites a match stick to lure the T.Rex, but Ian inadvertently intervenes, only for himself to be chased to a restroom, where Donald is hiding. The T.Rex brings down the hut, breaking Ian’s leg, and devours Donald. Lex and Alan battle the T.Rex, with the broken Jeep manned by Tim falling to the woods below.