Free dog Johannes' job is to observe everything that happens in his urban park and report back to the park's three bison elders, but changes are afoot, including more humans, a new building, a boatload of goats, and a shocking revelation that changes his view of the world.

After a summer of tagging sharks off the west coast of Florida, Sabina, Maribel, and Luke have a new assignment: searching for "survivor trees" that are resistant to the disease that is destroying the state's citrus trees; the search takes them to the remote mangrove islands of Sanibel Island, where they discover Spanish oranges, a grave, an immense saltwater crocodile, a reclusive woman who believes that the ghost of a dead king, beheaded by Spanish...