2009 год. Ellie usually goes to see Yiayia, her Greek grandma, for the summer holidays, but this year Yiayia can't have her. Instead Ellie will have to stay with Granny Mac in Edinburgh. Ellie had been looking forward to swimming in the sea, and seeing octopuses, and feeling silver fish between her toes. She isn't so sure about summer in Scotland – doesn't it always rain there? But Ellie is pleasantly surprised to discover that there's lots to do with Granny Mac, and when she tells Yiayia all about it on the phone she realizes that when you have two grannies you get the best of both worlds!