Adapted from Culpables Series by Mercedes Ron. A different version from the original Culpa mía.
An 18-year-old girl moves from America to London with her mother and wealthy stepfather. She meets her stepbrother, and an attraction brews despite their efforts. Unaware, her estranged father tracks her down after release from prison.

Years after an alien invasion almost extinguished human mankind, refugee on a secret base on the Moon, three heroes decide to jump into a time travel in the desperate attempt to save the survivors but they don't know that the Sentinel is waiting for them.