William S. and the Great Escape

William S. Baggett is a good kid trapped in a really awful family. William has his running-away money ready to go, he's just been waiting until he's older than twelve to leave. When his big brothers flush his sister's pet guinea pig down the toilet, she insists they leave now. And take the two littlest Baggetts with them. So they head out in the middle of the night, ready to escape to their aunt Fiona's house.

Unfortunately the trip doesn't go exactly as planned. It's not so easy travelin...