Randy Riley, a science genius who loves baseball but is not very good at it, needs to use both his interests to save his town from a giant fireball that is heading their way.
All twelve-year-old Josh wants to do is play baseball but when his father, a minor league pitcher, signs him up for a youth championship team, Josh finds himself embroiled in a situation with potentially illegal consequences.
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.