Ranger, the time-traveling golden retriever with search-and-rescue training, travels to New York City on the morning of the 9/11 attacks.

Ranger has never needed his search-and-rescue training more than when he arrives at the World Trade Center on September 11, 2001. There he meets Risha Scott and her friend Max who have come to work with Risha's mother for a school project. But when the unthinkable happens and the building is evacuated, Risha is separated from her mom. Can Ranger lead Risha to safety and help reunite her family?