Omega perfumer Evan Hart loses his memory when a poisoned bonding fragrance destroys his ceremony with fiancé Noah Vale. He wakes to Noah's long-lost Alpha brother, Cassian, claiming they are already mates. Cassian imprisons Noah, controls Evan's medical proxy, and uses Evan's genuine physical response to support a false relationship. As Evan's memories return, he discovers that Cassian is both his captor and the boy abducted while protecting him nineteen years earlier. With Blackridge handler Silas Crowe resurfacing and the Hart family hiding an older crime, Evan must choose freely—and Cassian must learn to open every door, even if Evan walks through one.