Really this is a 2-in-1.
Our first story is very Scroogesque.
Aidan is a human actor who has been royally screwed over by everyone he trusted, even his family. Especially his family.
Now said family is out to kill him. To do so, Aiden's brother has called on the god of pain to kill him.
Leta, a dream god, has set out to save him.
The long and short of it is that Leta dies and then comes back as human and they live HEA. We do see Zeus for the first time and my previous assessment is accurate: ass hat.
Our second story is more interesting as far as the series goes. We get to see where all the characters are over the holidays.
There are 2 groups of weres. The Sanctuary gang and the non-sanctuary gang. After Unleash the Night, Wren and his friend weren't exactly welcome at Sanctuary, nor did they really want to be. Except Fang. He and Aimee are still star crossed. Though Aimee's father does indicate that if she chooses Fang, he'll still love and support her.
All the ex-hunters are together, too. Kyrian, Julian, Valerius, Zarek and families. Nick is there, too, looking in the window, but doesn't go in. Stryker can see what he sees and Nick won't do that to his friends.
I feel so bad from him.
Ash then goes to Olympus to be with Kat and Sin. Artemis is there obviously, but that not who he goes to see, of course. (As a side note, I read this one before Devil May Cry and it seriously threw me off. But that's neither here nor there.) Kat is very pregnant and Sin teases Artemis about being a grandmother. She freaks and stomps off.