Griffin Campbell and his family have just uprooted their lives to move to a new town and take ownership of an abandoned hotel in hopes of restoring it to the lively vacation destination it once was. Not long after Griffin begins his first day at a new school, he learns that the hotel he just moved into is rumored to be haunted by the ghost of a girl who disappeared decades ago.

Harper and Griffin learn that Young Jess rigged the talent show out of her hatred for Savannah. They vow to go back and stop Jess from causing Savannah's disappearance.

Griffin and Harper learn the camp dance is coming up, and that is the day Savannah went missing. Later, Harper meets Jess, and learns her mom did go to camp and hated Savannah.

Ben convinces Savannah to go to the dance, despite Griffin's efforts to stop her. When Savannah dances with Ben, Jess leaves in a jealous rage alarming Griffin and Harper.

Young Jess dares Savannah to spend the night in The Tremont basement with real ghosts. Young Ben comes to Savannah's defense. Young Jess storms off and wishes Savannah gone.

Harper and Griffin escape after being detained by the police and find young Jess, who reveals new details about her relationship with Savannah.

Savannah's ghost uses the old radio in the hidden room to reach out to Griffin and Harper.

Harper and Griffin travel to the past, whey they discover Savannah working at the Tremont.