The episode starts out showing Gwen working in a small village taking care of pigs. The village is attacked by the warlord Helios (the warlord working for Morgana). Gwen is trapped by his men. As they move to kill her, Helios stops them, claiming "there is still pleasure to be had". Helios is entrapt by Gwen's beauty and questions her history.
The scene cuts to Arthur speaking in front of a large council. He claims that Camelot and a warring neighboring village have reached a disput over some land. Camelot will get to keep the land because he is going to marry their princess. Afterwards in Arthur's rooms, Merlin confronts Arthur claiming that Arthur still Gwen and he shouldn't marry someone he doesn't love.
There is a scene in which Agravaine and Morgana discuss plans. Agraivaine says the the plans to attack Camelot are almost in his grasp. That night, the apprentice scribe who was supposed to steal the plans says he can't disobey his master. Agravaine slays him in anger. The next scene is Agravaine and Morgana. Morgana is angry that Agravaine didn't get the plans and says he needs to get the plans even if it incriminates him.
A new scene shows Gwen and Helios. Helios gives Gwen a dress and requests her presence at dinner. They dine while Gwen makes up a false history. A guard interrupts dinner saying Lady Morgana has arrived. Gwen is shocked and tells Helios that she is tired and wants to retire for the night. Gwen conceals her face as she passes Lady Morgana. Helios and Morgana discuss plans to siege Camelot.
At Camelot, Princess Mithian arrives. Arthur is shocked by her beauty. He announces a feast to celebrate.
In Gaius's tower, Merlin confronts Gaius about Arthur and Gwen. He wants to know if he should intervene. Gaius says that if it is their fate, it will happen. Gauis is then summoned by gaurds who have found the body of the boy Agravaine killed. Agravaine planted a letter on the body which depict the boy paid to steal the siege plans for the city. Gaius finds the letter and hands it to Agravaine. Agravaine shows it to Arthur, who gives Agravaine access to check the papers on the siege plans.
Agravaine delivers the papers to Morgana - she spells a copy. She takes it to Helios. Helios demands proof that this would work and Morgana tells Helios that the plans came from Agravaine. Gwen is evesdropping. She moves and they overhear her. She runs. Morgana figures out it was Gwen who was listening. She demands they search all night for her.
The feast is shown. Merlin uses magic to embarrass Arthur. Mithian and Arthur have a picnic the next day. Merlin again uses magic to embarrass Arthur, but it actually brings the couple closer. Mithian later approaches Merlin before the great hunt. She says she likes Arthur and wants Merlin to give her a chance.
Gwen is being chased through the forest by Morgana. Morgana and her argue; Morgana uses magic to knock Gwen unconsciencous and then turn her into a deer. As she leaves, Arthur, Mithian and other hunters arrive. Merlin stares into the deer's eyes and realises it is Gwen. He uses magic to save Gwen from Arthur's arrow, but Mithian's hits her and wounds her. Gwen hides. The party searches. Arthur finds Gwen's wedding ring and calls off the hunt.
Merlin comes back to the forest that night and calls for Gwen. He finds her unconsciencous and heals her with magic. Gwen tells Merlin everything and Merlin tries to convince Gwen to come back to Camelot. Gwen runs off as a Camelot patrol arrives. Merlin tells Arthur that Agravaine stole the siege plans, but doesn't tell him of Gwen. Arthur and Merlin look to find the siege plans and they are right where they are supposed to be. Agravaine arrives, but is dismissed by Arthur. Arthur threatens Merlin with exile.
Later Merlin visits Arthur in his room. Arthur is playing with Gwen's engagement ring. Arthur asks Merlin how can he still love someone who has betrayed him? Merlin tells Arthur to do what his heart tells him. The next morning, Mithian leaves Camelot. She asks Arthur before she leaves who has Arthur given up so much for. Arthur tells her it is no one - a blacksmith's daughter. Mithian admits she too would give up much for love.