The Campbell's and the Dunn's prepare for the Tremont’s Grand Re-opening! Harper and Griffin realize that the crystal is cracking which may prevent the Time Machine from working.

Griffin and Harper successfully travel to the past, where they find Savannah working at The Tremont.

Harper travels back in time to the date her father died in hopes of trying to change the outcome.

Harper returns home and fills Griffin in on the deed, stolen land, and her visions of a fire. After Sam disappears, Savannah finds a note saying that he’s travelled to the future.

When Daisy struggles at pretending to be Harper, Griffin searches for the crystal to swap them. After the Twins don't hear from Topher, they try to capture the ghost themselves.

Once Griffin and Harper learn they can’t reopen the hatch to let Savannah in, they quickly go back through the portal.

The ghost will go, but will their future be saved?

The Tremonts were duped by the Judge and have 48 hours to vacate their land. Meanwhile, when Griffin and Daisy rush towards the portal with the crystal, everything goes black!

Griffin, stuck in the future, learns the ghost ruins their lives. Harper and Savannah try bringing him back to the present.

Griffin and Harper realize they've time traveled to before Savannah's disappearance. When they go back again, they think they see Savannah getting taken into the woods.

Harper and Savannah retrieve Griffin from the future. Sam and Griffin face the grimmest truth, Topher is in a coma in 2024. The twins and Topher almost catch Savannah’s “ghost.”

Griffin Campbell and his family move to a new town and take ownership of an abandoned hotel in hopes of restoring it back to the lively vacation destination it once was.

Harper asks Griffin to meet her at the portal after school, but, when Griffin gets home, he discovers his Grandfather has arrived for a visit.

In 1947, Harper and Griffin meet Ruby. Sarah becomes increasingly freaked out by the ghost.

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!

Griffin frantically searches for the missing crystal and helps a panicking Daisy to navigate her modern surroundings; meanwhile, Harper has a cryptic vision at the springs.