Sixteen-year-old Robbie Daniels, happy to get a job aboard a troller fishing for king salmon off southeastern Alaska, finds himself in danger when he discovers that his mysterious captain is searching for long-buried Russian plaques that lay claim to Alaska and the Northwest.

Sarah Robinson and her family intended to have a vacation adventure aboard a boat but ended up stranded on a remote and mysterious island. Along with unusual, weird creatures, they met the "Curator," a strange boy who may be an...alien. And then they met Cash, a girl who may hold the key to why Shipwreck Island has been kept a secret for so long. Is there treasure? And will the people hunting for treasure rescue the castaways? The Robinsons have only...