After being hit by CEO Adrian Hawthorne, delivery driver Josephine Vale regains her lost memories as the miracle doctor Lady Phoenix and effortlessly cures his terminal illness. Adrian Hawthorne insists on proposing, but she politely declines because she is already married. Hoping to become her apprentice, Dr. Hart urges Adrian Hawthorne to pursue Josephine. Unbeknownst to them, Josephine's husband Graham Mercer has been having an affair with Olivia Mercer. His recent promotion was secretly arranged by the chairman of Four Seas Group as a favor to Josephine. At his promotion banquet, Graham Mercer insults Josephine's colleagues, only to be put in his place by the newly awakened Josephine. Just as he announces their divorce, the chairman arrives, reveals Josephine's true identity, and fires both Graham and Olivia's father. In the end, Dr. Hart successfully becomes her apprentice, and Adrian Hawthorne romantically proposes to Josephine Vale.
