Porcupine is surprised when she finds Eeyore camped out in front of the stump where she normally plays music. Wondering why he's not sleeping at home, she calls the Super Sleuths, who realize that Eeyore has been sleepwalking. That night, they camp out at his place to figure out what is going on and just as they're about to nod off to sleep, he starts sleepwalking. They go on a rambling adventure through the Hundred Acre Wood, helping him to stay safe, but are no closer to the solution of their mystery. They realize that solving the sleepwalking problem might hinge on learning exactly why the donkey has taken to sleepwalking.