Jason (Alan Thicke) is the only member of the Seaver family who isn't upset that little Chrissy (Ashley Johnson) has invented an imaginary friend named Ike--a six-foot mouse. On the other hand, Maggie (Joanna Kerns) is worried that Chrissy is incapable of separating fantasy from reality. Can it be that the invisible Ike is actually a manifestation of Chrissy's forlorn wish that one of the Seavers start paying more attention to her? Without giving anything away, it can be noted that Ike is played by series regular Kirk Cameron, a.k.a. Mike Seaver. ~ Hal Erickson, Rovi