Mary and Gary strive to become regular parents, but they need a wolf-proof basement, and as they worry about what kind of parents they will become, they grow more concerned about the species of their future child.
As the full moon draws near, Mary turns into a wolf while late in her pregnancy, and Emma stays with her aunt, as a precautionary measure.
The wolf was unable to recognize Gary, and when Gary meets the mother of Emma's new friend, Mary offers him an easy out.
Anton, Marie's former professor, appears to threaten everything and reveals to her a secret that complicates matters, and while she finds herself trapped with him in the basement and with the full moon, she unleashes her inner wolf.
After Mary and Anton's transformation, Gary starts looking for signs that will tell him whether he should stay with her or not.
Eight months later, Gary makes a precise birth plan, but a call from the police about a double murder turns the tide, causing Mary to go into labor.
With the decision to perform an emergency caesarean section, and the police arriving at the same time, Mary, Gary, and their future child have no choice but to flee.