Hello, and thank you for using MSU eXtension for your wildflower ID question.
That looks like an Indian Cucumber-Root, (Medeola virginiana),Lily family (Liliaceae)
This flower can have 3 to 6 flower petals displaying. It's really the leaves that have changed color and display the striking color with its berries shown in your photo. The berries were in fact the real flowering part. see the link above for a spring flowering image.