Eleven-year-old cousins Carter Jones and Liam McGrath must both deal with grudges that threaten to break apart their All-Star teams during post-season play.
A young, inexperienced football team discovers that its beginner's luck is due to a series of mysterious but successful plays anonymously sent to the coach.
Chico, a native of Puerto Rico and an excellent swimmer, joins the Royals baseball team but has trouble making friends with String, the most popular member of the team.
Sylvester Coddmyer III is having a dismal baseball season until he takes advice from a mysterious ex-ballplayer named Cheeko and starts to play more aggressively.
Mel Jensen, an African-American boy, is talented enough to be on the basketball team's starting lineup, but two of the white players want to keep him in the background.
Pie Pennelli hockey troubles--his hand-me-down skates are too big and a teammate is hassling him--increase when his neighbors find an antique hockey game they claim can predict every play Pie's team will make.
Brett's skateboarding abilities dramatically improve after using the Lizard, a skateboard mysteriously unearthed in his front yard, but his friends start to wonder if the skateboard is haunted.