The Guardian of Guano follows Ricardo Moreno, caretaker of the Punta San Juan Reserve in southern Peru as he strives to protect the guano-producing birds that live on the Reserve. Farmers depend on guards like Moreno to keep the birds safe, as they use the bird guano for farming. While performing his tasks, Moreno has been composing music lyrics, poetry about his life with his winged neighbors the guanay birds.