If you, somehow, haven’t seen Knives Out yet, no worries, Christopher Plummer is the victim of the murder mystery, and so his death occurs early and isn’t much of a surprise. He also still has a significant role in the film, much of the film takes place via flashback, as the various suspects recount the events that led to the death of the family patriarch.
Article source: https://www.cinemablend.com/news/2491053/rian-johnson-celebrated-knives-out-dvd-release-with-awesome-set-photo