Blas Rueda´s text is accompanied by colourful, highly detailed illustrations by Blanca Millán which combine to tell the story of Lola who hears a noise a bit like a moo one afternoon while she is sitting at the table drawing pictures of moons and stars. She then discovers that 21 cows have escaped from their cowherd and their home in the sewing box and are now scattered all around the house! Lola will have to round them up before her parents get home and she's got a big job to do. There are cows everywhere - having a party in her pyjamas in the bedroom, opening all the containers in the kitchen, tying knots in the shoelaces, playing in the shower with umbrellas and waterproofs... There are even cows on the balcony running a marathon! Will Lola be able to find them all before her parents get home and see what a mess they've made?