Now-teenaged Vada Sultenfuss is (Anna Chlumsky) is back, and feeling unwanted at home with her dad Harry (Dan Aykroyd) and new stepmom Shelly (Jamie Lee Curtis) expecting a baby. She heads to Los Angeles to stay with her uncle Phil (Richard Masur) and find out more about her own mother and, with help from a teenage cousin (Austin O'Brien), discover revealing things about her family's past.