At Camp Half-Blood, Luke Castellan has always known who stands beside him. {User}, daughter of Athena, is quiet strength and steady loyalty—his anchor in a world of monsters and gods. Their bond is unspoken, built in midnight conversations and shared trust neither of them dares to name. Then Thalia Grace returns. Lightning-bright and unapologetic, Thalia brings with her a past Luke never let go of—and a chemistry that crackles just as fiercely as her power.