Watch FMovies. Barbie’s younger sister Skipper is a babysitting expert, but when her babysitting business hits a snag, she takes a summer job at a water park and tries out different jobs with some new friends. A birthday party at the park goes awry and Skipper’s babysitting skills save the day! The success renews Skipper’s confidence in her babysitting business, and she and her new friends start a babysitting squad.