Dr Stephen Brickley and Dr Ann Gormley both have PHDs in neuroscience, but when it comes to controlling their two sets of twins - all under the age of five - they've run out of ideas. After years of trying for a baby, Ann and Steve had IVF treatment and were overjoyed when they found out they were expecting twins. But just one year after the arrival of Aiden and Ella, the news that Ann was pregnant with more twins didn't go down quite as well. Steve works five days a week, leaving Ann at home, but with four children under the age of five, she feels decidedly outnumbered. Aiden and Ella, who are almost five, are at loggerheads, while toddlers Louis and Ciaron give mum the run-around and refuse to eat anything other than jars of baby food. The hurdle of taking their children beyond the toddler stage is too much for Ann and Steve. All four children still drink milk from baby bottles, and they're all still in nappies at night, even though Aiden and Ella are in school by day.