After their children were diagnosed with life-threatening food allergies, Dan and Miranda Andersen are constantly on guard for their family's safety, which has led to conflicting parenting styles. Also, too much unsupervised screen-time has made the bedtime routine a nightmare. Can Nanny Jo help this family over-come their fears and get a good night's rest?

Mom, Kristi is overwhelmed and frustrated having to discipline her three girls while her husband, Diarmid, timidly passes the buck. Kristi has resorted to yelling and screaming in order to gain control, and now, her aggressive behavior is being mimicked by her daughter, Karina. Can Nanny Jo get these parents to work together on a united front, or will the house continue to be hostile and divided?

When Crystal Tobeck and Jeff Lawrence met, they doubled their family and got a second chance at love. But the honeymoon was soon over as rebellious children clashed with controlling parents, leaving everything in chaos. Can Supernanny help this family blend in more love and harmony?