Filthy Rich centres on three illegitimate children who discover they each have a claim to the fortune of one of New Zealand's wealthiest men – John Truebridge. When he dies, these unwanted, unexpected heirs stand to share in his legacy – but not if his legitimate family has anything to do with it! Miriama Smith (Siege, Legend of the Seeker) leads an incredible cast, playing Brady - the ambitious, younger second wife of John Snr. She thought she'd inherit it all – or at least share in the spoils of a legacy with her step-son, John Jnr. But secrets are revealed, alliances forged and suddenly there are three cuckoos in the nest – with no intention of leaving soon.