Determined to record every summer day, young history teacher Luke Devlin starts school vacation imagining he'll describe backcountry adventures in the Rockies and sun-splashed days home in Denver. But all too soon the season veers into crisis, when his older brother faces life-threatening illness and Luke becomes entangled in a love affair that's as fast- moving and possibly as fatal as his brother's diagnosis. As Luke manages the household for his absent parents and struggles with the constant pressure of his unfinished master's deadline, his fling with a Wyoming rancher grows serious just as his brother's crisis overwhelms him. Luke's love of his native ground and his search for romance collide with the hard realities of mortality and loss during an unexpected summer.