Riley, a human orphan, marries Alpha Ethan. On their child's funeral day, she catches him cheating with his stepsister Wendy, and he mocks her with their son's death. She agrees to an open marriage, then meets three notorious CCG Alpha brothers: Gunnar, Cahn, and Cayden, Ethan's best friends. One night pulls her into their world. Riley discovers Ethan faked her death, stole her company, and poisoned their son, and she is the Strongest Guardian's daughter, carrying a sealed wolf bloodline. Under the three Alphas' protection, she awakens her power, becomes the Luna, and prepares to settle her debt with Ethan in blood and fire.
