Now that twelve-year-old Anya is old enough to join her fourteen-year-old sister Marina on the fast-pitch softball team things are becoming tense between them: Anya has trouble catching her sister's pitches and resents Marina's criticism and being moved to the outfield, Marina is increasingly obsessed with her role as captain, and angry because Anya does not seem to take the game as seriously as she does--and with an important game coming up the sisters...

For the past three years twelve-year-old Louise and her adopted brother Otto have played on the same hockey team, and Lou is used to being one of the best centers on the team; but when their coach's reserve unit is called up, his replacement puts his own son at center and relegates Lou to the bench--and when his son's arrogance starts costing them goals Lou and the team must convince him that girls can be hockey stars too.

Twin girls Sarit and Allie have always been coached in basketball by their father, but now that their parents are divorced and he has moved away, Sarit is unhappy playing on the school team, and resentful that her sister still enjoys the game.

Twelve-year-old Jasmine Lopez loves exploring the coral reefs around Fiji where her marine biologist parents are stationed, and though young, she is already a certified scuba diver, a fact that her ten-year-old brother Arjun seems to resent; in fact he seems to believe he already knows everything about diving, and certainly does not want help from his older sister--until his overconfidence and defiance leads them both into a confrontation with a reef...