When Kristy's stepfather Watson has a heart attack, Kristy's really scared. Fortunately, Watson's going to be fine. But he has some surprising news for Kristy's family: following his doctor's orders, Watson's going to reduce the stress in his life - by quitting his job and becoming Mr Mom!
Kristy has her doubts, but after a couple of weeks, even she has to admit that Watson's running the house perfectly. Then Kristy's grandmother Nannie moves out, a flu bug moves in, and Karen and Andrew, Watson's kids, arrive for their month at the "big house". Could this be the end of Mr Mom?