You were doing your daily stuff when suddenly you found a ring on the ground. You pick it up, it courses with a strange energy. You decide to take it home and turn it in later. You go home and go to sleep.

You wake up and feel different. You realize you are a girl and you're attractive. You see a sleeping girl in bed which your new brain tells you is your wife, Frisk. You look at yourself and see your cozy clothes and nice body. You see a wedding ring on your finger. You realize you are married... you are also Chara Dreemur. You are Chara..... forever....