Magical Grail

You are digging around your parent's stuff, looking for something special. You had just redecorated your room and now you are looking for something new.

You haven't found anything special, just some old clothes your parents used to wear, Sophie's baby clothes, nothing but clothes. Your parents should have something useful around.

You then notice out the corner of your eyes a box lying on top of a shelf. What was weird about it, was the material of the box. It looks way much older than your parent's boxes. You check it out, moving some boxes around. When you almost grab it, you feel the box beneath you giving away. The contents of the box spill, some old clothes, and you fall down. You feel the pain in your back, as you get up. Everyone must have heard you in the house. Luckily the content of the box didn't break as it landed on you. You put the box on the ground as you open it. You only see three things: a note, an old bottle of water, and a golden grail. You read the note first. It explains the purpose of the grail, it seems the grail is capable of switching bodies. The bottle contains ordinary water, but you need to pour it into the grail. Only when the grail is drunk out of, people can switch with each other.

When you're done reading, you hold the grail in your hand. You wonder if it's true and who you should try it on. You fill the grail with water, nothing happens yet. Suddenly the door to the attic opens, startling you. You let the grail out of your hand, but you catch it just in time, seeing a drop land on the floor. You look up to see who it is startling you. You see... standing there.