With newest member Nami serving as translator, the Time Soldiers travel to Edo, Japan, in 1700 and learn of its history from a samurai teacher, then travel further into the past to retrieve a helmet that had been stolen from the teacher during a battle.

After replacing the three oldest members of their group with new recruits, the Time Soldiers enter the portal and travel to England in the Middle Ages, where they face a dragon and an angry knight as they help the future King Ages to reach the sword in the stone.

The Time Soldiers hear someone crying. They find themselves on a deserted beach. They spot a cave in the cliffs filled with treasure chests, cannons and Pirates? Can the Time Soldiers avoid being captured? Will they be able to free the child prisoner? Will they make it home?