'Onty and his best friend Mutzy join in with his social church group and go on another madcap adventure trip to the River Murray at a Place called Land's End. They are spending time at a shack owned by an old time sea captain going under the name of Captain Maitland. The group, consisting of five boys and seven girls, together with their leader Sebastian and Captain Maitland have a wonderful time, exploring and enjoying the river areas, trying to catch wombats, yabbying and an array of other weird and exciting escapades. ' (Publisher's blurb)