WILL LIGHTMAN IS A GOOD-LOOKING, SMOOTH-TALKING BACHELOR WHOSE PRIMARY GOAL IN LIFE IS AVOIDING ANY KIND OF RESPONSIBILITY. BUT WHEN HE INVENTS AN IMAGINARY SON IN ORDER TO MEET ATTRACTIVE SINGLE MOMS, WILL GETS A HILARIOUS LESSON ABOUT LIFE FROM A BRIGHT BUT HOPELESSLY GEEKY 12-YEAR-OLD NAMED MARCUS.