Inventor Penny Jones and her corgi sidekick Luck return for another out-of-this-world adventure, and this time they're crashing through portals and dodging earthquakes to rescue a magical mountain.

When the walls of Penny's attic shake awake to deliver a glowing SOS from her friends in the magical realm of Zollora, Penny and Luck know they have to go back.

When they arrive at the Tamrez Mountains, they find a world on the brink of disaster: an early freeze is coming, tunnels are collapsing, and the ancient crystals powering the mountain have gone dark. Armed with only her brilliant inventing mind, can Penny convince a divided kingdom to unite and recharge the magic before they're frozen out forever?