Debbie Fendon is a domineering granny who will stop at nothing to protect her family - but the person they most need protecting from is her. When her hermit-like husband, William, unexpectedly dies, Debbie makes an outlandish decision that puts the family under more pressure than ever.

The thing is, William isn't actually dead - he just got mistakenly declared it and has been living in the loft while they wait for the life insurance to pay out. Just as the family comes to terms with the baffling behavior of these geriatric toddlers, Debbie reveals another secret she's been keeping up her sleeve that could bring the whole family down.