In the poem, a nightingale with a beautiful singing voice encounters a frog who is envious of her talent. The frog manipulates the naive nightingale into believing he can help improve her singing, but he really aims to exploit her abilities for his own gain. The frog's destructive criticism breaks down the nightingale's confidence and causes her to lose the charm of her original song. Overworked by the frog's demands, the nightingale dies from exhaustion, revealing the frog's true malicious nature.