A fallen potion-making family teeters on the brink of ruin, forcing Cassian's father to use him as a pawn in a marriage alliance. His rival, pure-blood wizard Kaiser, offers to help but instead keeps Cassian at his estate as a personal assistant. As they live under the same roof, their hostility slowly turns into love. Meanwhile, Cassian's father orders him to steal a secret potion formula, while Kaiser's childhood friend Sophia enters the picture. In the end, Cassian casts aside his pride and bravely confesses his love to Kaiser.