While passionately in love with his wife Katie, Andy also loves being a firefighter and when he is diagnosed with cancer, his whole world is turned upside down. What seemed so certain only days before is now an unknown. Andy tries to protect Katie by not telling her, but her fears and his increasing pain and moodiness only succeed in fueling a growing divide between them.

The fire station and its comradery are Andy's refuge, but station officer Lt. Mike Bentley wages a vendetta against Andy, only making Andy more determined not to reveal weakness of any kind. In spite of Bentley, the C shift crew rallies to support Andy until events take a downward turn.

Firefighters face a myriad of dangers, but invisible dangers can pose the greatest threat of all.

Will courage, duty, and even love be enough to save Andy from this unseen threat? If the worst should happen, would his greatest legacy be the love of the fire service or his love for his wife?

Time can only tell because, in the end, the unforeseen might have the greatest impact of all.