The poem tells the story of a frog who boasts of his singing abilities and offers to train a nightingale. The nightingale is impressed by the frog and accepts his training, but he pushes her too hard. The nightingale grows weary from the intense practice and pressure to perform. Eventually, she bursts a blood vessel and dies from the strain. The moral is that it is foolish to be overly influenced by those unknown to you or without true expertise.