Once again, it is Christmas time, and the McCallister family is planning another vacation, only this time they are bound to vacate in Miami, Florida. Unfortunately, Kevin does not agree with the rest of his family about this upcoming vacation and once again he got himself into trouble again, regarding with a fight with his brother Buzz. But as he and his family arrived at the airport they could miss their flight, this is where the chaos which is Chicago/O’Hare airport causes Kevin to unknowingly separate from the rest of his family, so instead of Miami, he is going to New York (much to Kevin's dismay). But what Kevin will soon realize that he will not only be alone in a big city, having a luxury suite at the Plaza, and visiting some of New York's biggest stores and seeing some sites as well, he will also reunite with his rivals the "Wet Bandits" Harry Lime and Marv Merchants, who escaped from prison and to New York and are planning to rob a toy store named "Duncan's Toy Chest" where the owner E.F. Duncan is planning to use the money to donate it to the children's hospital. Kevin plans to defeat the wet bandits once and for all by using his uncle Rob's renovating townhouse and the equipment inside as traps to defeat them and save Duncan's Toy Chest.