Aislinn can see faeries. The faeries in her town of Huntsdale are not harmless or benevolent. They are mischievous creatures who like to cause problems for humans, and Aislinn knows that she’ll be in danger if they ever find out that she can see them. Aislinn fears for her life when Keenan, the handsome young king of the Summer faeries, starts following her and pursuing her romantically.
Keenan isn’t just looking for a girlfriend. He wants Aislinn to become a faery and be his new Summer Queen. With a queen by his side, he can warm the world and grow strong enough to face his mother, Beira, the evil Winter Queen. Keenan disguises himself as a mortal and attends Aislinn’s school. He pursues her, but she rebuffs all of his advances. Aislinn tells her friend Seth that she can see faeries, and Seth helps her research ways to defend herself against them.
Aislinn can’t avoid Keenan forever. She is offered a test. If she does not take the test, she will become a Summer Girl who is dependent on Keenan and tied to him forever. Or she can lift the Winter staff, which is her test. When she lifts it, she will either become the Summer Queen or a lonely, isolated Winter Girl.
The choice is not easy for Aislinn. She has loathed the fey (the name given to the faery race) her whole life and doesn’t want to join them, let alone rule over them. Also, becoming Keenan’s queen would threaten her growing relationship with her friend Seth, and she learns that Keenan himself is still emotionally attached to the Winter Girl, Donia.
Danger awaits all the characters because Winter Queen Beira, Keenan’s mother, is ready to kill faeries and mortals alike to ensure that her son does not find his queen. She does not want the world to grow warmer.
In the end, Aislinn and Keenan find common ground and arrive at an understanding. Aislinn agrees to the test and becomes the Summer Queen. Keenan kills his mother, Beira, and Donia becomes the new Winter Queen. Seth and Aislinn are established as a couple, though she is now a faery and he is still mortal. Keenan and Donia are reunited, and the faery courts reach a time of peace.