From the publisher:
Dick and Dorothea Callum came to the Norfolk Broads during the Easter holidays, eager to learn to sail. There, they run into the Coot Club--children who protect the local birds from thoughtless tourists.
Trouble begins when a coot's nest is disturbed by a ship full of "Hullabaloos"--rude holiday boaters. The children try to convince the "Hullabaloos" to moor their noisy boat somewhere else. This fails and frantic chases, calamitous boat collisions, daring rescues (including by a dog, William the pug), and rewards ensue!
