Olive has played over at her friend Lizard's house before, but tonight she is sleeping over for the first time. Making pepperoni-marshmallow pizza is tons of fun. But when it's time for bed, Olive finds out that Lizard sleeps without any lights on at all... Those dark shadows are awfully creepy. And what's that noise down the hall?This charming story about best friends and new experiences shows how courage and imagination--and a little purple slime--can transform even the spookiest situation, and help allay a child's fear of sleeping over a friend's house for the first time.