The band plays an ancient song which hasn't been heard in thousands of years which unexpectedly awakens a deadly Nordic lake troll and must compose the world's first death metal lullaby to return the beast to its slumber.

Pickles decides to go on a reunion tour with his old band, Snakes 'n' Barrels. The government plots to use a new super-drug to erase Pickles' mind and 'reprogram' him, thereby destroying Dethklok from within.

After a concert that Dethklok didn't perform, but just stood on the stage, they travel to Mississippi to learn about the blues.

Uncomfortable and embarrassed, Dethklok painfully endures while their parents are in town for a visit. They are at first pissed and doubtful when their parents announce the release of the 'Parents of Dethklok' album, but soon realize the depth of their parents' anger. The guys learn an important lesson: there's nothing more brutal in this world than raising children.

Dethklok has a huge fight on stage, which prompts the record label to hire a performance coach to keep the band together. The band falls in love with therapy for all the wrong reasons.

Mordhouse, the home of Dethklok, opens its gates to the public for the first time in celebration of International Dethfan Day. Will the band and their fans make it through the experience? Dethklok find themselves in potential trouble after two Internet geeks threaten to release the band's exclusive, one-time-only, fan song over the internet unless they give in to their demands.

Dethklok has an end of the quarter employee evaluation to find out who has been embezzling from the company. The patronizing evaluation start off with a pep talk and a corporate video that will have audiences and Dethfans alike vying for a spot on the Dethklok payroll.

It's Murderface's birthday, and the rest of the band soon are faced with the difficult task of getting him a present. In fact, he actually ends up hating his party until they finally give him their gift.

Continually plagued by his stupidity, Nathan Explosion decides to attempt to earn his GED.

Dethklok hires the world's only six-star chef to cook dinner for them before a show in Norway. They warn him of the Dethklok curse, where every employee they've hired, chefs included, has tragically died. Later, when their new chef is at near-death on life support following an unfortunate helicoptor mishap, the band is forced to make its own meals.

Dethklok decides to try their hand at standup comedy in order to avoid burning out on metal. Pickles remains traumatized by a heckler while the rest of the band learns that comedy is all about embracing the hate.

Dethklok frontman Nathan Explosion wants the band's next album to be the ultimate smash hit. So, to achieve this goal, he decides to have a recording session locked in a Russian nuclear submarine that is moving through the Mariana Trench - the deepest, darkest location in the Earth's crust itself. How brutal is that?!

Upon learning that they've once again earned too much money over the past year, the band tries to "donate" as much as they can to charity as a tax write-off. The guys also unwisely attempt fatherhood and play a landmark concert with the London Philharmonic Orchestra which ends with a killer laser light show.

Skwisgaar hosts the "Skwisgaar Skwigelf Advanced Hand Finger Wizard Master Class" pay-per-view event to promote sales of his new guitar line, which includes models such as the Skwisarmyatar and the Antfarmatar. The rest of the guys get inspired to also try their hand at endorsement deals. Metal legend King Diamond guest stars as Ronald Von Monoldburg.

Murderface searches for a religion after a near-death experience leaves him longing for greater meaning. He samples everything from Christianity to Satanism before finding his true calling.

Toki tries to compensate for his adorable charm by over-brutalizing his intentions and actions.

Dr. Rockso and Toki's sudden friendship has the rest of Dethklok uneasy.

Dethklok is asked to host the American Pornography Awards, but Nathan's new controlling girlfriend puts a damper on the situation for the entire band.

The band is given a movie development deal.

Dethklok receives death threats from fans right before the first live performance of Dethwater. Krosier and Ravenwood attempt to take Dethklok out, with the help of an old enemies brother... With the secret army on the horizon waiting for the right moment to strike, will Dethklok make it through this?