What's the plot summary of Grapes of Wrath?

The Grapes of Wrath is a National Book Award and Pulitzer Prize-winning realist novel by John Steinbeck. First published in 1939, the novel follows the Joad family as they make their way west to California from the devastated Dust Bowl in Oklahoma. Upon arrival in California and after a desperate struggle to make it there, the Joads find the state overwhelmed with migrant workers and with wages so low that many do not survive. The Grapes of Wrath explores themes of industrialization, perseverance, family, community, and oppression.