Mortal Folly

"Mortal Folly" is the 24th episode in season two of Adventure Time. Along with "Mortal Recoil" it forms a two-part episode.

Synopsis
When The Lich is accidentally freed from it's prison by the waving snail, in Princess Bubblegum's Castle, Finn and Jake must head forth to stop it from regaining it's full power...all while being pestered by the Ice King to give him their blessing to marry Princess Bubblegum.

Plot
In Part One, Finn, Jake, and Princess Bubblegum are meditating when Princess Bubblegum has a vision of The Lich. Deciding to check on him, she gives Finn and Jake special jewelry to protect their minds from The Lich, who uses spells to control people's minds and bodies. They enter the secret room where she keeps him frozen in amber, and explains how he was going to destroy Ooo until Billy pushed him into the resin. As she explains, however, the Waving Snail climbs out of Finns backpack is quickly possesed by the Lich for not wearing the jewlery; the Lich is quickly freed. When Finn and Jake tried to stop him, the Lich escaped and got away. Princess Bubblegum gives Finn The Gauntlet of the Hero Billy, a gauntlet that Billy used to defeat The Lich the first time and told him to smite the Lich with it before he gets to his well of power and gets his magic back. She also gives him a sweater made with she made, telling him she cares for him. Just before they leave, the Ice King butts in, asking Finn and Jake to bless his wedding with princess Bubblegum, which of course they refuse to do. As they journey to find The Lich, the Ice King repeatedly begs for the blessing. After using the gauntlet on him, the Ice Kings gives up on the blessing and kidnaps the princess while she is eating ice cream in hopes that Finn and Jake are alright. When they are almost at The Lich's power well, the Ice King interrupts them yet again to show them he kidnapped PB. While he does this, the Lich makes it to his well, so Finn and Jake hurry down, and the Ice King follows. Finn tries to attack with his gaunlet, but The Lich crushes it. Jake attacks the villain, but is knocked out, and when he falls, Finn's protective jewelry breaks and the Lich tries to control him. He can't, however, because of Finn's love sweater. Finn tries to kill him with the sweater and seemingly does. When he vanishes, the Ice King decides to set PB free, but in doing so, accidentally drops her into the boiling well.

Major Characters

 * Finn
 * Jake
 * Princess Bubblegum
 * Ice King
 * The Lich

Minor Characters

 * Skeletons
 * Lady Rainicorn (In Jake's thoughts)
 * Snail

Trivia

 * This is the first episode that begins a two-part episode.
 * A special trailer for the two part episode aired on April 25.
 * Although the The Gauntlet of the Hero Billy is the same as one used by Billy, Finn's appears to be right-handed while Billy's was left handed.It is possible that both gauntlets are part of a pair.
 * The animatic is here.
 * Although Finn was shown to cut all of his hair for the Tree Witch in To Cut a Woman's Hair, this episode reveals it has somewhat grown back.
 * It's shown that Princess Bubblegum wears magic jeweled earrings which can be made into headbands that, like her crown, can protect their wearer's minds from the Lich's influence.
 * This is the first episode the Snail has a major role in, but the second where it interact with the main characters, which were in "Storytelling".
 * When PB said for Finn and Jake to track The Lich by following his trail of death, there was a darker and deeper ground in the Cotton Candy Forest, but when the Ice King appeared there was two similar trails and the one that Finn and Jake accidentaly switched was the right on. Its unknow if the other trail was faked by Lich.
 * The Gauntlet Dock can be seen again, while Finn and Jake were chasing The Lich.