When Kate has to unexpectedly go in to work, she has no choice but to leave ALF in charge of the baby. While babysitting, ALF faces a huge dilemma when he goes outside and finds the baby missing.

After ALF watches "Crimestoppers" and sees a guy resembling Willie who is wanted for polygamy, he tries to hide Willie. When the FBI takes Willie in for question following an anonymous tip, everyone assumes that ALF called it in.