Masha, Junchao, and Alice have planned the perfect slumber party-that is until Sunny insists their house is haunted! An unexplained howl. Flickering lights. And someone, or something, may be watching them from the front hall closet. At first, Sunny tries to scientifically explain what's going on. But as more strange things happen, she sees the opportunity to be the first scientist to collect actual data on the spirit world and becomes Sunny Sweet: Ghost Hunter.The girls are sufficiently spooked, but they can't wake up Mrs. Song. Alice's parents weren't too keen on Alice participating in this sleepover. And the girls are afraid that if they wake up Mrs. Song, she will call Alice's parents and Alice will be forever banned from all future sleepovers. With no other choice in sight, Masha, Junchao, and Alice reluctantly follow Sunny on the trail of a real «live" ghost.