The original characters from the first Cannonball Run movie compete in an illegal race across the country once more in various cars and trucks.
Substance-addicted Hollywood actress, Suzanne Vale is on the skids. After a spell at a detox centre her film company insists as a condition of continuing to employ her that she live with her mother, herself once a star and now a champion drinker. Such a set-up is bad news for Suzanne who has struggled for years to get out of her mother's shadow, and who still treats her like a child. Despite these and other problems, Suzanne begins to see the funny side of her situation, and also realises that not only do daughters have mothers—mothers do too.