While at his friend's home, Bon Namihira accidentally witnesses time travel in action and finds out that to keep it a secret, he must be erased.

After narrowly escaping erasure, Bon must learn the ropes of being a Time Patrol agent. His first mission: 1947 Tokyo in the midst of Typhoon Kathleen.

In 1500 B.C. on Crete, Bon and Ream experience the dire consequences of neglecting their Time Boats. Will they be able to save their targets in time?

Using everything he's learned as a Time Patrol agent, Bon is determined to stop the Dimension Ball. Will he make it in time before space-time collapses?