After You've Gone (2007)

Season 1: Episode 1

When nurse Ann Venables goes to Africa to help out with a disaster relief effort, she leaves her teenage children Alex and Molly in the care of her ex Jimmy and her mother Diana. The kids try to exploit the fact that the easygoing handyman and his posh ex-mother-in-law cross swords at every turn, ultimately leading to the realisation that in order to survive their mom's absence, the kids need them both.