When the family takes a trip to Camelot, the theme park (which they think is the real Camelot), they enjoy a day of medieval merriment and get inspired to sign up for knight school. With Heath's assistance, the family partakes in knight training at the castle, complete with jousting and sword fighting lessons. They make their own medieval weapons, don the medieval gear and head to Ripley Castle for the grand gauntlet challenge. When "princess Wendy" is held captive, Doug fights for her freedom in a sword fight against the Dark Knight and wins. The whole family celebrates when Doug is knighted as "Sir Cheeto."