Ok so you create a story based on the characters the person above you says.
Example:
Person 1:
Characters
Eevee
Shaymin
Person2: Once upon a time there was an Eevee playing in the meadow. He met a Shaymin and they lived happily ever after
Characters
Jolteon
Umbreon
Trainer
Persons3: Once upon a time there was a Jolteon and it's trainer, they met a shiny Umbreon and became good friends
(You get the point)

Characters
Cyndaquil
Typhlosion
Chikorita