High school student Mike Wilson has been struggling to be the man of the family for his mother and his younger sister Mary ever since Mike's father, a soldier, was killed in mysterious circumstances in Afghanistan when Mike was seven. But when Mike turns sixteen, he begins receiving letters from his father, written while his father was still alive and arranged to be sent to Mike when he turned sixteen. The letters provide wisdom and encouragement, and prompt Mike to begin living fully, as well as to discover who is sending the letters and how his father actually died.