Mike goes on a junk food binge to cope with missing Molly while she is out of town for a teacher's conference. Meanwhile, Carl contemplates leaving Chicago after learning heartbreaking news from James.

In the Season 3 finale, Mike's mom dumps Capt. Murphy, who retaliates by sending Mike and Carl on a detail at a Renaissance Faire, where a tornado approaches while Mike and Molly each try to reach the other with important news.