The project, which was once being developed as a starring vehicle for Julia Roberts, centres on a newlywed couple who are involved in a car accident that puts the wife in a coma. When she wakes up, she has no memory of her husband and he must strive to make her fall in love with him again.
Grey Gardens director Michael Sucsy will steer the project for Spyglass, says The Hollywood Reporter.
McAdams and Tatum have both appeared in box office hits based on Nicholas Sparks novels, The Notebook and Dear John. The Vow will be their first movie together.