D.W. loses her imaginary friend, Sue Ellen goes for a train ride that isn't what she expected, Arthur and the gang rush to film their lives for a new show hosted by Matt Damon, Mrs. Molina is teaching a dance class with some unlikely students.
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 Arthur to reach the sword in the stone.
The Time Soldiers, a group of friends who have discovered a secret time portal in the woods, are ready when the portal opens once again, ushering them into the world of young King Arthur.
