Billy Tushstone and his babysitter Blake Hetherten embark on a series of adventures during their summer vacation. Billy Tushstone and his babysitter Blake Hetherten embark on a series of adventures during their summer vacation. Billy Tushstone and his babysitter Blake Hetherten embark on a series of adventures during their summer vacation. Billy Tushstone and his babysitter Blake Hetherten embark on a series of adventures during their summer vacation.