Galavant is a dashing knight, down on his luck, determined to reclaim his reputation and his "Happily Ever After" by going after the evil King Richard, who ruined it the moment he kidnapped the love of Galavant's life, Madalena. Galavant is assisted by Princess Isabella, whose kingdom of Valencia has been conquered by Richard, and Sid, his squire. Meanwhile, the malevolent but weak-willed Richard tries to win over the scheming Madalena and seeks help from his brawny henchman, Gareth, and his chef, Vincenzo. 

At the same time, Chester Wormwood, an evil sorcerer who doubles as a wedding planner, attempts to hypnotize Isabella into accepting being married to her cousin. When his plan backfires, Isabella exiles him, and he flees to Valencia, where he encourages Gareth and Madalena to start an unplanned war with Hortensia. Wormwood also offers to teach them his "dark dark evil way" (abbreviated as D'DEW) of sorcery, which Gareth rejects but Madalena secretly accepts. All the episodes of the season lead up to a large battle among three armies, including the Valencians, the Hortensians, and a swarm of zombies led by Galavant and Richard.