The four Conroy sisters spend a wild summer at the seaside with Big Grandma, who tries to break them of their reading habit by substituting fresh air and hard work for books and gets unexpected results.

When she takes money accidentally left behind at an ATM, a guilty Binny decides to return it but discovers it has gone missing, leading her to team up with her frenemy, Gareth, to figure out who might have taken it.

"When Lulu goes for a sleepover at her nan's house, she isn't supposed to take her new hamster. But how can she leave him behind?" -- Back cover.