Hansel & Gretel: Sweet Nightmare

After walking for a while, they found a house made of candy and decided to get in.
When they reached the door, an old lady opened it and invited them to come inside.
Fed by the lady with lots of candies, they stayed for days.
But the old lady also made them clean her house and they finally realized she was a witch.
They tried to escape, but the witch forced them to drink a potion in an attempt to stop them from running away.
Having eaten so much candy, the spell didn't affect them completly and now they can transform themselves into animals at will.
They are still trying to escape by finding an exit from the house, but they must stay togheter to protect themselves.
Help them!