Colder than Ice

Nyx Vega is an Assassin. Trained as a cold blooded killer until the age of 17, Nyx has pledged her soul to The Frost, an organization of Faerie Assassins sent to Earth to kill any creatures of Eonbara that cross to the Human World. In exchange young Nyx will become a full fledged fey, her dream since she was first created as a fey spirit into a human body. But something is wrong, Aelfdane the leader of The Frost has turned dark, and is sending out his soldiers to destroy the other country's of Eonbara, sending many fey to there deaths, and plunging Eonbara into war, Nyx has pledged her soul and body to Aelfdane, making her his eternal slave in the real world and the Afterlife. Is there any way to stop him?