Lennie and George are camped beside a river discussing their new job. Lennie wants to drink water from the river but George says he shouldn't because the water is dirty.
George and Lennie are working and George doesn't want Lennie to mess up
Curley's wife was flirting with Lennie and she told him to touch her hair and then he wouldn't stop touching it and she started screaming so Lennie tried to quiet her but accidentally snapped her neck and killed her.
George finds Lennie and Curleys dead wife and tells him to run off far far away.
George finds Lennie and start telling him good things that Lennie wants in his future to make him happy and then he hears the other guys looking for him puts the gun behind his head and pulls the trigger killing Lennie.
All the animals that Lennie killed can be a foreshadowing of how his life was going to end up at the end.