One night the brothers go to a field to stargaze, but find themselves trespassing on a wizard's herb farm.
The wizard turns them all into cats!
When Olivia found out about last night, she found the wizard and asked how she can lift the curse off her brothers. The wizard responded by asking her to find two rare magic herbs.
She agrees and journeys through the world to find the herbs.
After Olivia shows the wizard the herbs, he mixes them into a magic potion that the brothers must drink in it's entirety, if they want to be human again. The youngest brother drinks all but one drop, which results in him still having a cat tail.