We all know that millions of birds fly to Dongting Lake in winter.

Suddenly, the children of a gardener came into the greenhouse, caught the Beetle, tied him up to a wooden shoe boat with a wool string and floated the boat on a lake, so the beetle could not fly away.

Also the Courier may help them raise a crashed Boeing B-29 Superfortress from the bottom of Lake Mead, which they will restore and fly.