In 2006, Emergency medicine trainee, Damon, and his wife, Trisha, have two boys, Thai (age 4) and Callum (age 2.5). All is well in their lives until Callum begins vomiting for no apparent reason. He is found to have medulloblastoma, an aggressive brain tumour, for which the only possible hope for a cure comes from surgery and six cycles of ever more arduous chemotherapy with stem cell recovery at Toronto’s Hospital for Sick Children. The little family moves to Toronto and commits to supporting Callum as best they can, ensuring that he is never alone even during his long weeks of reverse isolation. They also try to keep Thai nearby, involved and aware, with the help of a local school and grandparents. But Callum dies during the last cycle of treatment. Saddened, exhausted, and bereaved, Damon and Trisha go back to their home town and try to (re)construct their lives, slowly returning to studies and work. They find meaning in creating tangible and intangible memorials to their lost son, and they find purpose in the more difficult task of moving forward, never losing the pain of grief. They adopt a little girl. Damon knows that Callum is always with him and the experience of his illness and death has dramatically infused his work as a physician.
