Prima ballerina Anthem Fleet is closely guarded by her parents in their penthouse apartment. But when she meets the handsome Gavin at a party on the wrong side of town, she is immediately drawn into his dangerous world. Then, in a tragic accident, Anthem falls to her death. She awakes in an underground lab, with a bionic heart ticking in her chest. As she navigates her new life, she uncovers the sinister truth behind those she trusted the most, and the chilling secret of her family lineage…and her duty to uphold it.