Althea encounters a giant black dog that shows her the way out of the forest. Inquiring about it, she learns about the Hound of the Baskervilles, Cryptozoology, and Paleontology. Linos, a young man who loves poetry and fairy tales, meets a centaur in Pelion and observes the life of the mythical race of centaurs. Stelios receives a huge egg as a gift from his uncle. It looks like an ostrich egg, but the creature that will emerge from it is the most dangerous monster of all time: a basilisk. Iris learns from her brother, Paul, about unicorns, mythical creatures - or perhaps real? - which Julius Caesar mentioned in his book as living in the forests of Gaul. On the same day, Iris will find herself in those forests and experience an incredible adventure. Four stories full of mystery and enchanting atmosphere, with heroes that are mythical creatures found in folklore, written with the mastery of a top children's author. [Excerpt from the text on the back cover of the edition]