The school was having a field day when the outbreak occurred, and Catherine was a cheerleader for the event. She ran into the storehouse to hide, but the Zombies soon tried to break in. Recalling the self-defense techniques her sister had taught her, she grabbed a chainsaw and rushed out of the storehouse. With the chainsaw, she cut off the heads of her former classmates. The spray of blood shocked her at first, but she couldn't bring herself to stop. When she finally broke through the horde.