Dan and Pete are excited to have a sleepover at Dan's house while their parents are away. Their excitement turns to fear when the dam breaks and a killer flood smashes through town. The boys decide to stay put until they realize that Dan's elderly neighbors may be in danger. When they reach the neighbors house, they find one of them near death. His lifesaving medicine is under water, and his wife is too old to make her way to town to get more. Both boys brave the flood to go find help.