The thirteen-year-old hero (Ethan Randall) and his kidsister (Thora Birch) conspire to reunite their divorced parents (Harley Jane Kozak and Jamey Sheridan) on Christmas Eve.
The lead characters are Dottie Hinson (Geena Davis) and her kidsister, Kit Keller (Lori Petty), who catch and pitch, respectively, for the Rockford Peaches and act out their sibling tensions on the baseball diamond and in the locker room.