Luxor City, a once lawless metropolis on the brink of civil war, is now at peace, but even in lighter times there are always shadows. In the technicolor streets of the Southern Empire, Junsu Sun, the Alpha heir to one of Luxor City's great crime families, busies himself by dealing with a blacklisted group known as the Underground.
After taking down one of the Underground's notorious leaders, Junsu assumes he'll be given time to rest and recuperate, but his mother, Alpha Xijuan Sun, has a new mission for him, involving a luxury cruise and a new mate, Omega Kaito Yamaguchi, of the powerful Yamaguchi family. Ever the dutiful son, Junsu obeys his orders as if it were any other mission, but this sort of engagement isn't exactly the type of thing he's used to and Kaito Yamaguchi certainly isn't the sort of Omega he's used to either.
Kaito is impatient, impassable, and impossible. He's a spoiled Omega who is pissed off that his family have reorganized his life and thrust him into this arranged mating with some Luxor City Alpha he's never met before. Kaito hasn't even seen a picture of Junsu Sun, a fact that Junsu uses to his advantage.
Faced with a week spent trapped on a luxury cruise with a rude, bratty Omega who doesn't even know who he is, Junsu decides to play a little trick on his future mate. But just how far will he let things go and where is the line between a little trick and a painful deception?
Meanwhile, other secrets floating between empires and continents are about to spill out onto the deck.