Shelly can't wait to celebrate her birthday with a small sleepover and her grandfather's homemade pizza. But when Pearl gets involved in panning, the little party becomes an overnight extravaganza at the People Museum, complete with a scavenger hunt and way-too-scary stories! Shelly is worried about spending the night in the museum's dark spaces and creaking exhibits. Surprisingly, everything goes swimmingly - until strange, glowing lights mysteriously...