Five years since we last saw the Worsley family, season four brings the biggest parenting challenge that Paul and Ally have ever faced, as 18-year-old Luke drops a bombshell at Christmas dinner that will change everyone’s lives forever. No longer in Luke’s shadow, 16-year-old Ava experiences her own bombshell moment as she meets and immediately falls for the charismatic “Holly.” Paul and Ally continue to try, fail and try again as they face these latest parenting challenges, while also having to support the increasingly troubled Jim and Jackie.