A Magnificent Work is an autobiographical exploration of the interconnectedness of toxic masculinity, White supremacy, and settler colonialism within the context of Canadian-occupied territories. It is a work of "documentary fiction" (to use the term of W. G. Sebald) or "autotheory" (as proposed by Maggie Nelson). Oudshoorn moves from relating his personal experiences as both a son and a father to exploring the ways in which similar events have played out on a much larger scale within the Canadian occupation.

Special attention is given to the history of the Mohawk Institute, Canada's oldest and longest-running "Indian Residential School." Thus, although an Anglican bishop once described the Mohawk Institute as "a magnificent work, " Oudshoorn argues that the truly magnificent work that awaits people like him--notably, cishet male settlers of Christian and European descent--is the process of embodying a gentle masculinity, recovering a sense of one's proper place of connectedness within a network of relationships with varying degrees of responsibility and accountability, and striving towards decolonization.