one good turn deserves another
Little Ant is too busy to do a favor for the weevil, and he doubts the weevil would ever be able to repay him anyway. But when his friend the stick insect is snatched by a dove, Little Ant learns that you never know when you might be in a position to help a friend.
This story is a reimagining of Aesop's classic fable, "The Ant and the Dove," and teaches that one good turn deserves another.