In their war against Valencia, all hope seems lost for Isabella and the people of Hortensia until Galavant arrives with his zombie army.

Meanwhile, Gareth abandons Madalena after he realizes that she betrayed him and is learning (and using) the Dark Dark Evil Way.

Under Madalena and Wormwood's spell, the zombie army revolt against Galavant and company, until Sid arrives with an unlikely army of his own. Galavant, Gareth, and Sid's army battle the Zombies while Isabella fights Madalena.

Meanwhile, Richard goes after Wormwood, who attacks Tad Cooper, which provokes Richard to perform a (nearly) heroic act. Elsewhere, Gareth tries to reason with Madalena, but she is driven to learn how to use her newly acquired dark magic. At the end of the day, who will get their happily ever after?