User blog comment:Merlin artist/Another competition.../@comment-5396944-20120923180455

Here's my plot:

Morgana is sitting in her hut, thinking about Merlin and how he always manages to foil her plans. She then begins to think about Emrys and how he always manages to foil her plans as well. She then starts wondering if they could be the same person or ally's in any way. Morgana then decides to badly hurt or kill Merlin and then try to take over Camelot and see if Emrys spoils her plans.

Meanwhile back in Camelot, it is night time and everyone's asleep. Morgana sneaks into Camelot and goes to Gaius's chambers and walks into Merlin's room. She stretches her hand out and begins to cast a spell on Merlin. Merlin's body glows and he begins to toss and groan in his sleep. Morgana smiles and leaves Camelot. Gaius tries to wake Merlin up in the morning and when Merlin doesn't respond, he goes into Merlin's room and is horrified to find Merlin tossing and groaning in pain. Merlin also has a fever. Arthur comes in shortly and asks where Merlin is. Gaius shows him the unconscious boy. Just as Arthur asks what happened, Leon comes charging shouting they're being attacked.

Morgana takes the citadel and Arthur, Merlin,Gaius and all the knights prisoner. Arthur decides that someone should pose as being loyal to Morgana but actually be a spy for them. Gwaine suggests Merlin as he's so ill and Morgana was very fond of him when they were friends. Morgana drags them all before her and asks if anyone will pledge their loyalty to her. Merlin says he will before he faints.

Morgana brings Merlin up to the guest chambers and heals him. When Merlin is fully recovered he becomes a trusted advisor to Morgana and loyal spy for Arthur and the knights. However, Merlin helps them escape and Morgana guesses Merlin helped them. She makes Merlin ill again and throws him in the dungeons.

Arthur plans a counter attack and succeeds. They rescue Merlin and all the other prisoners and Gaius begins treating Merlin for the illness. Morgana does not find out about Merlin's secret and continues thinking Merlin and Emrys are different people.

It isn't very long but it was just an idea in my head.