"Last night the rain poured down. Today the stream is empty! Where did the water go? It's a good thing mouse detectives Dot and Jabber are on the case! Their search upstream leads to funny encounters with a puddle of minnows, a snake, and lots of clues" --
A century after an early 20th-century New York community is intentionally flooded to redistribute water downstate, an inspector overseeing a dangerously neglected dam uncovers a prophecy that warns of additional sacrifices.
Five little beavers, working feverishly to build a dam, are enticed one by one to leave their endeavor to play with other animals on the river bank, leaving one tired beaver to finish the job.