Team Tennyson goes international in the Omni-Copter and the first stop is for a hike in the Scottish Highlands, but the weather isn't just bad, it's foggy, and that means one thing and one thing only: the return of The Fogg!
Team Tennyson makes their first overseas stop in Europe. Ben complains about his surrounding, and Gwen tells him that it's great for sightseeing on the Scottish moors. Gwen tells Ben about them. Max opens his umbrella inside the Rustbucket, making Ben think something bad will happen, so he doesn't have to go. Gwen tells Ben about the rumored monsters in Scotland, to convince Ben to come along.
The Tennyson's walk through the rain looking at the sights. Ben complains about not being able to see the sights since they're covered by fog, Max also agrees with him. All of a sudden the Fogg monster shows up. Ben tries to do what he did last time and attempts to dial up Overflow, but he doesn't have access to him anymore. The trio runs away from the monster, ending up hiding behind a rock. Max asks Ben for ideas to beat the monster. Ben tells him that Overflow isn't an option in the watch anymore, and believes the Fogg monster followed them to Scotland.
Gwen finds out about a cave that they can hide in. The Fogg monster shows up again, and the Tennyson's run off. Max's asks Ben if he chose an alien already, but Ben decides to use Humungousaur. Ben transforms trying to hit the cloud. He uses his tail and creates shockwaves hitting the ground. Max and Gwen hops onto Humungousaur, who brings them to the cave.
Max suggest that while Ben keeps the Fogg busy, Max and Gwen can sneak back and get the copter. Ben jumps out of the cave and faces the Fogg monster. However his sonic tail attacks weren't working in the mud. Humungousaur finds a rock and uses it to his advantage. Soon Ben times out and falls in the mud. Right before the monster tries to devour Ben, the copter flies in blowing it away. As the Tennyson's attempts to fly away, the monster grabs onto the copter, trying to get to the engine. While Ben and Gwen tries to get the Fogg out of the vehicle, Max turns on the copter's extra bright spotlight. Unfortunately they needed actual sunlight to evaporate it.
Ben transforms into Diamondhead and creates a giant magnifying glass out of diamonds. Once Ben thought he defeated the monster with the enhanced sun power, the Tennyson's tries to fly away. However the Fogg monster gets struck by lighting, enhancing its size and power. The monster attacks the ship, but Ben goes to the top of the vehicle, and gets struck by lighting, in order to overpower the monster, causing the molecules to split into atoms.
Later on Team Tennyson admires the view of Scotland.
The gang makes their first overseas stop in Europe.
Max: You got anything yet, Ben? Ben: I'm trying, I'm trying! But there's nothing I can- Oh, Humungousaur! Gwen: "Humungousaur"? Did you just made that up? Ben: A little kid made it up, I think it's awesome! And it's about to save all of our butts.
Diamondhead: I never thought I'd say this but... I LOVE SCOTTISH WEATHER!