"Jack and Annie use the magic tree house to travel back in time to 1947 Brooklyn, New York, where they pretend to be batboys at Jackie Robinson's first game with the Brooklyn Dodgers against the Boston Braves"--

"Dust Bowl refugee Gloria Mae Willard finds herself uprooted and working on a California peach orchard, where she tries to join the secret, all-boys baseball team that she's desperate to play on"--

Moose has his hands full during the summer of 1936 watching his autistic sister, Natalie, and the warden's daughter, Piper, and trying to get on a baseball team by proving he knows Al Capone.

In Brooklyn in 1951, a die-hard Giants fan teaches nine-year-old Maggie, who is a "Bums" (Dodgers) fan, how to use a technique to keep score of a baseball game which creates a special friendship between them.

In 1977, middle-schooler Josie secretly takes on her aging grandfather's financial problems while also helping her friend Winky bail his Major League Baseball idol out of the town jail.

When his Little League team gets a coach who knows nothing about baseball, seventh grader Corey is dismayed to see the team taken over by the coach's pushy twelve-year-old granddaughter.

In 1972, after his older brother is killed in a car crash, Peter Lee's mother is paralyzed by grief and his traditional Chinese father seems emotionally frozen; but Peter hopes that if he joins a Little League team in Pittsburgh he can reawaken the passion for baseball that all the members of his family used to share and bring them back to life.

When the draft board calls on the eve of World War II, Roman leaves behind a career in minor-league baseball to join the army, and finds himself driving a tank in the North African campaign.