Twins Georgia and Adam can''t wait to go on their holiday to Cornwall ¿ especially as it''s the first time they''re taking their new puppy, Lucky, with them. Lucky loves the seaside ¿ chasing the waves, digging in the sand and the long cliff-top walks.One morning, unable to wait for Georgia and Adam, he sets off on his own. Unaware of the dangers, Lucky falls down a cliff and finds himself stranded, alone and hungry, and in need of rescue. Meanwhile, the search is on to find Lucky, but no-one seems to have seen the little dog. How will Georgia and Adam ever find Lucky?