After their huge argument at Toya's Prom Party, Mariah and Quad's friendship is on shaky ground. Quad is planning a birthday bash for Dr. G and doesn't want Mariah to bring her drama to the party, so she takes extra precautions. Toya faces the hard truth she can no longer afford the lifestyle she wants but when it's time to make changes she gets cold feet. Lisa's antics put Heavenly's patience to the test as they plan for their upcoming conference.
The heroes' search for the second Triumbric Stone takes them deep into unfamiliar marshlands. Claire asks Jim to be her dance partner.
Mr Khan faces up to the fact that his life hasn't turned out the way he planned it.
A troll queen arrives from afar to take AAARRRGGHH back to his homeland, revealing his devastating secret. Strickler asks Jim for protection.
A horde of pixies descends on Arcadia Oaks High, sending the student body into a tailspin. Angor Rot comes to Jim with a surprising proposal.
The Changeling posing as Claire's little brother throws a house party for the trolls of Arcadia. Jim and Toby look for a way to take Strickler's ring.
With Barbara's life hanging in the balance, Jim races to break the spell that bonds her to Strickler. Angor Rot attacks Toby and Claire.
The heroes brace for Angor Rot's inevitable invasion and prepare for the fight of their lives. Jim locates the last Triumbric Stone.
Two fateful battles unfold when Bular and Strickler order Jim to unlock the portal and free Gunmar and his Gumm-Gumm Army from the Darklands.
Armed with an ancient troll-hunting tool, Jim and Toby set out to unmask the Changelings living among them. Claire makes Jim a tempting offer.
While Draal settles into his new digs, Jim volunteers to babysit so he can find out whether Claire's little brother, Enrique, is a Changeling.
The Grand Tour pitches its travelling studio in Kakslauttanen, Finland, deep within the Arctic Circle. In this show, Richard Hammond is very excited by the UK arrival of the very first Ford Mustang to be made in right-hand-drive and then very annoyed when Jeremy Clarkson turns up with a Ford Focus RS loudly claiming that it's better. Meanwhile, James May recounts the epic battle between Ford and Ferrari for supremacy in the Le Mans endurance race of the 1960s. Plus, the presenters have some Christmas gift suggestions for the car enthusiast.
A reluctant Jim joins forces with Strickler to keep Barbara alive. Gnome Chompsky returns from the Darklands with important news about Enrique.
A mysterious stranger, a missing donkey, an outbreak of laryngitis in the church choir and a kidnapped baby threaten to spoil Kembleford's Christmas festivities.
Jim preps for a high-stakes rematch against Draal, the amulet's seemingly rightful heir. But their animosity gives way to a surprising partnership.
A visit to England features the historic prison in Shrewsbury, aka the Dana, where Nick and Katrina investigate 200 years of executions, torture and suicides.
Jim and Toby tour Heartstone Trollmarket, where Jim begins his training and the presence of the first human Trollhunter stirs up bitter resentment.
Toby and Claire take on a Trollhunter task so Jim can win a Spring King challenge. In the process, they learn to master new weapons.