Sam and Billie are reunited in Dubai, but Billie is struggling with her health and Sam's attempt to host a yacht party with Amanda Holden is put into jeopardy.

Sam and Billie open up about past traumas at a rebirthing workshop, Billie's health issues continue as the sisters undergo biological age testing, and Greg celebrates the big 4-0.

The results of biological age testing reveal shocking news, Sam heads to LA on a glamorous work trip, and the sisters let their hair down at an Usher concert.

Sam and Billie take mum Sue for a wellness check - but it's the sisters who end up getting some shocking results - and Sam discovers that someone has been stealing.

Sam has a work crisis, Billie finally gets a health diagnosis, the sisters go off grid and reveal the extent of some childhood traumas, and Sue gets a makeover.