Nikki's diary describes a frightful Halloween, on which she helps with her sister's ballet class party at the same time she is Brandon's date for their middle school Halloween dance, where she has promised to spend the evening with her two best friends.

As Nikki plans how she's going to spend her summer, things get more complicated after she starts hanging out with a visiting student.

Max and Erin continue the fight to protect South Ridge Middle School from Ralph and his henchmen, but Max's greatest challenge may be keeping his crush on Erin a secret.