A Southern California kid named Calvin Fuller is magically transported to the medieval kingdom of Camelot through a crack in the ground caused by an earthquake. Once there, he learns he was summoned by the wizard Merlin, who needs Calvin to save Camelot. Using dazzling modern inventions, can Calvin help King Arthur retain his crown and thwart the evil Lord Belasco?
Many loosely connected characters cross paths in this film, based on the stories of Raymond Carver. Waitress Doreen Piggot accidentally runs into a boy with her car. Soon after walking away, the child lapses into a coma. While at the hospital, the boy's grandfather tells his son, Howard, about his past affairs. Meanwhile, a baker starts harassing the family when they fail to pick up the boy's birthday cake.
After the infamous San Andreas Fault finally gives, triggering a magnitude 9 earthquake in California, a search and rescue helicopter pilot and his estranged wife make their way together from Los Angeles to San Francisco to save their only daughter. But their treacherous journey north is only the beginning. And when they think the worst may be over…it’s just getting started.