The Little Sable Point Lighthouse in Mears, Michigan, shares its story, beginning with its construction in 1874, throughout its years of service and the events it has witnessed.

Brick by brick, a lighthouse begins to rise high into the sky beside a shimmering lake. Nestled among the sand dunes near Mears, Michigan, the new lighthouse stands 115 feet tall. The lighthouse is eager to share its light with the ships sailing on Lake Michigan. But first it needs a keeper to light its oil lamp, to ignite its spark. Soon a keeper comes along. The lighthouse and its keeper settle into a daily routine. The keeper sweeps away the sand that sifts in. He cleans the windows. And every night, the keeper climbs to the top of the lighthouse to light the oil lamp, sharing its light with the ships sailing on the lake. When the keeper can't continue his duties, a new keeper arrives. And then another and another as the years go by.

But one day, workers come to take away the oil lamp and install an electric light. There is no need for a keeper anymore. The lighthouse is left alone and lonely. Will anyone ever share its spark again? Told from the perspective of the lighthouse, the story of Little Sable Point Lighthouse, the oldest remaining brick lighthouse on the Great Lakes, comes to life.