When a new computer is accidentally dropped on Mr. Mooney's foot, Lucy's adrenaline kicks in and amazes everyone by lifting the one-ton machine. Doctors discover that she has a "stuck" adrenal gland giving her superhuman strength, and she becomes an instant celebrity.
This new power causes Lucy to destroy everything she touches, ripping doors from their frames and leaving wrecked furniture in her wake. While the doctors gawk in amazement, the product endorsements pour in. Lucy gets offers to be the entire women's U.S. Olympic team, and endorsements for breakfast cereal and pet vitamins.