The third princess of the Kingdom of Liones, Elizabeth, finds Meliodas, who is the owner of the Boar Hat bar and is also one of the Seven Deadly Sins. With her identity exposed, she is pursued by Twigo whom Meliodas quickly defeats. The princess joins him on his journey to find the other Deadly Sins in order to defeat the Holy Knights, who have orchestrated a coup d'état and have overthrown the king.

Meliodas, Hawk and Elizabeth travel to the Forest of White Dreams that even Holy Knights avoid. There, the Prankster Imps that inhabit the Forest of White Dreams attempt to confuse them by impersonating Hawk and Elizabeth in order to lead them away. After defeating them, they follow them and find the Serpent's Sin of Envy, Diane sleeping in the forest. Gilthunder suddenly arrives and binds all of them with his lightning magic. Meliodas battles Gilthunder, purposely allows the Holy Knight to slash him, and under the pretense of dying due to the grave wound, acquires information about the whereabouts of two members of the Seven Deadly Sins, King and Ban, as his apparent last wish.