One day Gregor wakes up as a vermin. As he struggles to come to terms with his new body, he realized he was late for work. The manager enter the house and Gregor understands that he have to go out of his room.
Gregor hide in his room. His sister would bring him food and clean his room. The time he tried to get out, his father threw him an apple. So he just stared at the window wondering if he could be human again.
The family takes in three boarders to make ends meet. The three boarders seem to be serious men, since they all have long beards. They also have a thing about cleanliness. In order to make room for the boarders, the family starts storing random stuff in Gregor's room. Also, the three boarders often take their meals in the living room where the family used to eat, so the door to Gregor's room remains closed
Grete begins to play, and Gregor is enthralled. He decides that he must crawl out and tug at Grete's skirt to let her know that she must play in his room. Suddenly, the middle boarder points at Gregor. He angrily gives notice that the boarders are moving and they don't intend to pay a cent for the time they did spend in the Samsa home. Grete insists that Gregor has to go. She interprets his intrusion into the living room as an attempt to take over the entire apartment.
Gregor, as he did not eat or move, since he didn't like anything, died in his room, so his family, happily went to another place to start a new life without the "monster".