The Metamorphosis (German: Die Verwandlung), also translated as The Transformation, is a novella by Franz Kafka published in 1915. One of Kafka's best-known works, The Metamorphosis tells the story of salesman Gregor Samsa, who wakes one morning to find himself inexplicably transformed into a huge insect (German: ungeheueres Ungeziefer, lit. "monstrous vermin") and struggles to adjust to this condition. The novella has been widely discussed among literary critics, who have offered varied interpretations.
https://en.wikipedia.org/wiki/The_Metamorphosis