Dethklok is notified of a looming secret that has been around for hundreds of years: the secret of the Metalocalypse. Before they can contemplate what this means, however, Nathan must give a eulogy and do the most brutal thing he has ever done: get in touch with his emotions.

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

Dethklok join a tribute band to reignite their passion for Rock'n'Roll.

The members of Dethklok use a variety of potentially dangerous home remedies in a desperate attempt to avoid a visit to the doctor's office.

Dethklok band manager Charles Offdensen's absence causes problems for the band when they accidentally double book a show in the Middle East.

While the world awaits the final Dethklok performance, members of the band prepare for their post-Dethklok careers. Pickles starts a winery for the most alcoholic wine ever, Nathan and Skwisgaar look for a brand new sound that does not suck, and Toki works with Murderface on his campaign for congressman. Meanwhile, Selatcia takes Dethklok’s weakness as the opportune time to strike!

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.

Believing Ofdensen is dead, Dethklok is forced to become their own managers while dealing with repairs to the destroyed Mordhaus and trying to plan their biggest concert to date. Their efforts are stalled however when a past acquaintance cuts off their unlimited financial freedom to get revenge against the band.

While Pickles is back in rehab, the band replaces him with an automated beat keeping machine.

After mutable pregnancy lawsuits Skwisgaar begins to slip into a deep depression leaving him with the choice to search for his biological father. Meanwhile Murderface puts it upon himself to become Skwisgaars father which slowly draws jealousy from both Pickles and Toki.

Toki tries to turn the life of his rock n' roll clown friend, Dr. Rockzo, around by investing Dethklok's vacation fund into the ultimate Zazz Blammymatazz reunion. Everything goes smoothly until the media peers into Rockzo's past and discovers the clowns darkest secret, the secret that tore his career apart, the secret love of a girl he couldn't have. Rockzo disappears from the public, when we learn Toki CAN'T live without the clown, he recedes into a dark catatonia and Dethklok realizes that in order to save their band mate, they must save the clown.

Dethklok must experience the ultimate brutality of the Holiday season; spending time with their mothers. Meanwhile Murderface ringleads the ultimate Christmas special that ends up being backed by the Christian church. And a particular rock and roll clown makes a holiday appearance.

Toki writes a tell-all book about Skwisgaar and becomes lead guitarist for the band, but the pressure may be more than he can handle. Elsewhere, Nathan buys a defibrillator as a toy.

Toki goes to rock-and-roll camp and is bullied by other campers. But he soon finds an ally in a former Dethklok guitarist. Meanwhile, Skwisgaar and Murderface binge on candy and horror movies while Toki is away.

The guys spend time on a sub without women, and the conditions quickly deteriorate, prompting Pickles and Nathan to compete for the affections of their producer.

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.

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.

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.

When Toki gets news that his dad is dying, he's forced to travel back to his home town in Norway. The rest of the band decides to make a vacation out of it, citing "album inspiration" as their excuse to further put off working on their delayed album.

Dethklok’s new album is released to the world. The Revengencers make their next move. Mordhouse is directly attacked by the Revengencers, during a concert after party. Part two.

Nathan begins dating a hardcore Dethklok fan, against the advice of his bandmates. The rest of Dethklok takes up smoking.

Toki decides he wants to find his soulmate and goes to a match making service. Meanwhile, Murderface bets Skwisgaar that he can have more sex than him.

After a ridiculously pointless (and failed) lawsuit against their own band-mates and a devastating embarrassment in France, Murderface and Toki are suspended from the band. They later decide make a record label called "MurderTooth Records".

Accusations of racism are leveled at the band, so they open an urban youth center to improve their image. Elsewhere, Toki starts a club but excludes Murderface.

Dethklok opens a Dethfair in Tomahawk, Wisconsin; Pickles goes into realty.