Luna, a reclusive medical genius, is taken back by the Grant family, only to be relentlessly bullied by Mia, the adopted daughter. She takes the initiative to break off her engagement with Leo, saves Victor, the old patriarch of the Hawkins family, and enters a fake engagement partnership with Kaiser. Amid successive crises, Luna defuses dangers with her medical skills, combat prowess and wisdom, and gradually falls in love with Kaiser. In the end, the villains’ crimes are fully exposed. Letting go of her obsessions, Luna officially gets engaged to Kaiser and gains both family affection and true love.