Sword in the Stars (Once & Future #2)

In this epic sequel to Once & Future, Ari and her Rainbow knights must pull off a Holy Grail heist thousands of years in the past -- without destroying their own destinies.
Ari Helix may have won her battle against the tyrannical Mercer corporation, but the larger war has just begun. Ari and her cursed wizard Merlin must travel back in time to the unenlightened Middle Ages and steal the King Arthur's Grail -- the very definition of impossible. It's imperative that the time travelers not sk...