Katie, Harrison, Jillian, and Katie's annoying doll Mary-Ellen were seeing a show put on by the famous ventriloquist Jimmie O' James, who was using his dummy, Slappy. However, as most would know, Slappy is no normal dummy. He's alive. And, while at the show, it would seem that he fell in love with Katie's doll. When Jillian searched for her sister after she forgot Mary-Ellen, she met Jimmie O' James, and Jimmie gave her an autographed photo and she gave her address. However, Jimmie used the address to send Slappy to Jillian. And now strange things are happening around the house. Scary things. Evil things. And Jillian and Katie get the hint when Slappy steals their Mom's wedding ring...