When Olive and her adopted siblings spend the summer with their estranged grandmother at her creepy hotel, they stumble upon a secret door that holds a portal to distant magical worlds filled with space pirates, wizards, and a cotton-candied kingdom.

When her best friend, Austin, goes to soccer camp over the summer, thirteen-year-pld Bina finds an unlikely companion in Austin's older sister, Charlie.

Dee returns to her small hometown in New Jersey to see if she can help her father and the local police find her missing twin sister Beth, who was a leader in fighting the threat of a pipeline gutting the pinelands, but only finds more mysterious questions while discovering signs of the supernatural in the surrounding woods.