Zack learns that the baseball card he wants to buy has just been purchased by a boy named Mack who, when meeting him, surprisingly introduces himself as Zack's son from the future. Simultaneous.
When Zack goes to a store to buy a baseball card, he finds himself face-to-face with his future son who has traveled back in time
After months of hoarding his allowance, Zack is on his way to buy a prized baseball card. But when he gets to the store, the owner tells him that someone else has just bought it. Who, you may ask, has beaten Zack out of the card? A boy named Mack, who claims to be Zack's son from the future.