Life is hard on the Flemings' ranch in the Alberta foothills where abused or neglected horses find refuge with a kind, hard-working family. Debts abound and the bank is about to foreclose. Can they keep the ranch running?

Following the adventures of a bunch of nobodies who get up to a whole lot of nothing in the fictional prairie town of Dog River, Saskatchewan, Corner Gas focuses on the life (or lack thereof) of Brent LeRoy, proprietor of a gas station that is the only stop for miles around and a hub of action on the Prairies.

Lee Reston is a widow whose police officer son Greg dies in a car accident. Greg's friend and fellow officer Chris Lallek tries to help the Reston family in Greg's absence. Soon, he and Lee grow close and fall in love. But Lee is fifteen years older than Chris, something that upsets most of her family, including her college-aged daughter. When Chris proposes marriage, Lee must decide whether to risk alienating her family in order to be with the man she loves.