Second-grade graduate A.J. and his family rent a beach house, but summer vacation is ruined when annoying Andrea shows up and develops a crush on the lifeguard.

Joe Stoshack travels back to 1919, where he meets Shoeless Joe Jackson and tries to prevent the fixing of the World Series in which Jackson was wrongly implicated.

With his ability to travel through time by using baseball cards, Joe goes back to 1947 to meet Jackie Robinson, turning into a black boy in the process.

Joe and his longtime enemy, Bobby Fuller, use a vintage baseball card to travel in time, hoping to stop Jim Thorpe from participating in the 1912 Olympics and losing his medals, but instead they watch Thorpe struggle during his first season with the New York Giants.

When Joe travels back in time to correct something for Mickey Mantle, he ends up in 1944 where he meets the Milwaukee Chicks, one of the only all-female professional baseball teams in the history of the game.

"The wackiest road trip in history continues as the McDonald twins travel the Southwest dodging nefarious villains and visiting weird but true American landmarks"--

Joe Stoshack is beginning to think life can't get much worse. The thing he likes best in the whole world is baseball. He knows everything there is to know about the game ... except how to hit home runs. His specialty seems to be striking out. But Joe's life is about to change in the most amazing way. When Joe gets a job cleaning old Miss Young's attic he's not too happy about it. The place is filled with tons of worthless trash, and he's only getting...

Sent back in time to 79 AD, on a mission to photograph the eruption of Mount Vesuvius, the Flashback Four race to get their picture.

After recovering from being hit in the head during a baseball game, Stosh travels back in time to try to save Ray Chapman, a batter who was killed by a pitch in New York in 1920.

Stosh travels back to 1969 to try to prevent the untimely death of Roberto Clemente, a legendary baseball player and humanitarian, but upon his return to the present, he meets his own great-grandson who takes him into the future, and what he finds there is more shocking than anything he has encountered in his travels to the past.