Heart of Coal is a dual narrative following the story of Wannie, a man who defied the odds despite a difficult upbringing marked by abuse, poverty, and disadvantage. The story alternates between Wannie's own experiences and those of his grandson, who idolizes and learns from him.

Wannie's life unfolds against the backdrop of the changes brought by the twentieth century and the industrialization of rural Appalachia. Escaping his troubled homelife, he finds salvation and guidance from his uncles in a small town. His experiences working in the coal mines and later in Detroit shape his resilience and determination, providing life lessons for his grandson.

The grandson's narrative reveals the impact of Wannie's experiences on his own development, highlighting themes of resilience, hope, loss, and acceptance. The book explores the human spirit's capacity to overcome adversity and find inspiration in unlikely places, resonating with readers familiar with stories of self-made individuals and Appalachian heritage.

With comparisons to To Kill a Mockingbird and Hillbilly Elegy, this work of fiction draws on the real-life story of the author's grandfather, offering a raw and honest portrayal of the challenges faced by many in similar circumstances. The book ultimately celebrates Wannie's unwavering faith in God and his sense of responsibility that define his legacy.