Harry and Draco had been a couple for a long time, but Voldemort's rising to power cast a shadow over their happiness. Draco leaves Harry and becomes a Death Eater. Harry tries to cope with his pain, but it seems stronger than him, and although Hermione tries to reassure him, Harry's still mourning the loss of Draco.
One day, wandering the corridors of Hogwarts, Harry hears someone crying in a bathroom. He's shocked when he finds Draco; he realizes that Draco still loves him and that he never wanted to hurt him. He doesn't know what to do. He runs away and tries to sort things out in his mind.
He decides that he can't stand this situation any longer. He joins Voldemort and takes the Dark Mark.
As soon as he tells Hermione about it, and he witnesses her shock and disbelief, Harry realizes exactly what he's done. But he doesn't give up. He wants to stay with Draco and help him.
When Draco is ordered to kill Dumbledore, Harry knows what he should do...
