Mimi has finally made the adjustment to her new life with an empty nest. Both of her girls had left home and were living their own lives. Semiretirement was looking good until life threw her the mother of all curveballs, which in the end turned out to be her greatest blessings. She was faced with the responsibility of raising two grandchildren, both boys. The peaceful, serene life she had become accustomed to had suddenly come to a screeching halt. Not only did she move two young boys into her home, two uninvited guests showed up too. They became affectionately known as Nobody and Somebody. The funny thing was, the two were never seen by Mimi and Pop. Kolton and Karter and their imaginary friends gave the word chaos a whole new meaning.