when you and your ex bestfriend were kids,you made a spell, which implied if you hurt eachother, you both die.

10 years later, you both were really strong witches,and deadly enemies,though you coudnt hurt eachother, or you will both die. Knowing the spell, your parents forced you to stay în The same house to get along and forget about this nonsense, not knowing your enemy had other plans to manipulate you