After the return from Edom Magnus realises that breaking up with Alec was a mistake. But Alec has moved on...

Jace reveals that he knows about Alec's and Magnus's relationship, but Alec tries to deny everything. Later, when they are alone together, Jace makes Alec confront his feelings and persuades him to go to Magnus and apologize.

After Alec denied his and Magnus's relationship in front of Jace, he goes to Magnus's to apologize.

Alec has a nightmare. While comforting him, Magnus learns something about himself... Oneshot.