Mousse loves his solitary life by the sea. Every morning, he strolls by the shore, drinks his freshly-brewed coffee, and takes a long, serene bath. But when an uninvited walrus named J.P. Barnacle appears in his armchair one day, Mousse’s scrupulous routine is ruined. It isn’t long before J.P. Barnacle has made himself comfortable in just about every part of Mousse’s home: his bed, his dining room, his bathtub . . . What’s Mousse to do?

In this delightfully illustrated picture book for early readers, Claire Lebourg depicts the unexpected pleasures in helping others and accommodating needs beyond our own.