Pandora and Apollo are about to embark on a journey to the Underworld - a place where even the gods themselves dare not trespass without an explicit invitation from the ruler.

With Zeus leading the way, things should go seamlessly.

Keyword: should.

Unfortunately for the trio, the trip is anything but. Coins are needed for passage, Titans are clamoring to get to the entrance, and Pandora still hasn't found any evidence that her younger sister is safe and uninvolved in the Unboxing the Titans themselves.

And that's before they meet the deadly, brooding god of the Underworld. He's unwilling to help his selfish brother, but he's more inclined once he realizes who Pandora's sister is. Pandora knows the welfare of Olympus should be her main priority, but she can't help but want to know how he knows Seph...and if he is the reason she's gone in the first place.

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