Intheexcitingfourthseason,wefast-forwardsixyears,discoveringthatNikki(EstherSmith)andJason(RafeSpall)areexperiencedadoptershavingbuiltalovelylittlenuclearfamily,enrichedbyanextraordinarysupportnetwork.However,astheirteenagedaughter,Princess(ScarlettRayner),startstoyearnforaconnectionwithherbirthmother,NikkiandJasonfindthemselvesconfrontedwiththeultimatetestoftheirparentingskills