Mortified follows the imaginative life of Taylor Fry, a twelve-year-old girl living in a beachside town in Australia called Sunburn Beach, as she struggles to make it through her teen years with her flawed and embarrassing family.
Taylor thinks all her prayers have been answered when she is allowed to move in with Brittany's family for a few days. But she quickly realises the Flune family is a well-oiled machine, with strict house rules. She shares her dilemma with Beethoven and realises her own family might not be perfect, but they're perfect for her.
Taylor is sure she will die of shame when Don and Glenda enter a talent quest for parents at her school. Not one to back away from a challenge, Taylor drags Hector along on a crusade to prove via DNA analysis that Don and Glenda are in fact not her parents, and therefore cannot enter the talent quest.