Ernie's excited reports of seeing a flying saucer are received with skepticism, but the next day he not only sees the weird vehicle again, but he snaps some pictures and is later told by the Air Force to keep quiet about it.

Steve Douglas passes up his company's offer of a weekend in Rio because Saturday is the start of trout season. The boys do their best to get Steve to make Ernie his fishing buddy so Robbie and Chip can get out of the annual trip.