A young man struggles to correct his life after the death of his father.

A father struggles with the past. A daughter fights for the future. A mother searches for answers. The Boyajians have not celebrated Christmas in 11 years. They lost their faith when they lost their son to the Persian Gulf War. Now a stranger has joined them – around the same age the boy would have been.

Kardia weaves fiction and science to tell the story of Hope, a pathologist who embarks on a journey of reconciliation. Hope discovers that the experimental heart operation she underwent as a child has mysteriously linked her life with another. To unlock the secret of her past, Hope must revisit her childhood and explore regions of her life that have heart stopping results.