King Grim Vasteri is the strongest and most feared warrior in the Tornian Empire. He is the King of Luda, blood brother to the Emperor, and his line will die with him. He will have no offspring for no female would join with him for once he was scarred he was considered "unfit". The Tornian Empire has been dying ever since the great infection caused the birth of females to become a rarity. Since then they have been searching the known universes for compatible females.

Mackenzie 'Mac' Wharton had agreed to guide a group that had wanted an adventure on her mountain. They got more than they bargained for when they were all abducted by a group of aliens called the Ganglians. Badly beaten and barely alive, Mac finds herself in the arms of the largest male she's ever seen. She should fear him, should be fighting to get away from him, but there was something about the massive male that called to her.

Cassandra Chamberlain has always stood out. It's hard not to at 6'1" and 165 pounds, with jet black hair and sapphire blue eyes. And if that isn't enough, she is also brilliant, graduating from Harvard at 15, teaching at MIT at 19, and up for the prestigious Magellan Award at 25. She's never really fit in. Not with her peers, not with her contemporaries, only with her family. But everything changes when the Earth is attacked, and Cassandra and her niece, Victoria, are the only survivors. Suddenly the smartest woman on the planet has to relearn everything.

Raised from birth to be a soldier, Kace Tameron is a disciplined, military-trained gladiator. He is on contract to the Kor Magna Arena to hone his fighting skills on the blood-soaked arena sand and then return to the military. He lives for one thing: To protect his planet, and on his world, love is forbidden. But then he collides with a feisty redhead from Earth who threatens to shatter his legendary control.

Sub-Captain Eve Traynor knows a suicide mission when she sees one. With deadly insectoid aliens threatening to invade Earth, the planet's only chance of survival is to get the attention of the fierce Eon Warriors. But the Eon want nothing to do with Earth, and Eve wants nothing to do with abducting War Commander Davion Thann-Eon off his warship. But when Earth's Space Corps threaten her sisters, Eve will do anything to keep them safe, even if it means she might not make it back.