In a flashback back to 1962, Benny becomes Benny "the Jet" Rodriguez. The story shifts to 1972, ten years after the events of The Sandlot. A new crop of five kids now reside in San Fernando Valley in Los Angeles and play baseball at the Sandlot. Johnnie Smalls, the little brother of Scott Smalls, has heard the legend of a ferocious dog he calls "The Great Fear", that is one of The Beast’s offspring and is owned by Mr. Mertle, who lives behind the Sandlot. David Durango becomes the leader of the team which consists of Tarquell, Mac, Saul and his little brother, Sammy, referred to as "Fingers", because he is deaf. Behind the Sandlot, the Goodfairer family lives next to Mr. Mertle.
A new girl in the Sandlot named Hayley Goodfairer, and her two friends, Jenny and Penny, compete with the boys over sharing the Sandlot. When the girls refuse to leave, Johnnie suggests sharing it. All but David agree. The girls are amazing softball players, and Johnnie asks them to join their team. The kids play a game with a little league team led by David’s rival Singleton to determine who gets the Sandlot. When Singleton purposely hits Hayley, David punches him in retaliation and forces him and his team to permanently vacate the Sandlot.