Years after a devastating war has devastated most of the Earth, Lasty Farson is chosen as one of the angels dispatched to key moments in history to restore balance. Though she is clumsy and inept in her human form, she becomes a formidable combatant when she transforms into Angel Rabbie. On her first day as a debut angel, she arrives late, yet she is sent to Earth, where she confronts the ancient war robots that remain, an enormous challenge for a rookie angel.