Finally the first day of Sugar Creek's highly anticipated revival celebration arrives! But for some of the town's residents, the morning begins on a sour note... which leads to sour thoughts and the possibility of sour plans. The gang anticipates the upcoming evening's events together with a swim in the creek... until the bullies show up. After a water scuffle, Big Bob Till tips off the gang to the possibility that the celebration might be in great jeopardy. Upon arrival at the revival, the gang members don their thinking caps and scour the area searching for clues. Join the gang in their race against nightfall to discover if there's any truth to Big Bob's threat... before the threat comes true!