Using a tattered old map as their guide, three sailor friends of Maribel¿s make their way to the old house belonging to her gradfather, old Captain Bonanza. On not finding her there, however, the three friends, Juan, Julián and Sebastián, leave the house. Maribel has been kidnapped by the terrible pirate, Pata de Palo, who is golding her prisoner at a mansion inhabited by Pluff, a little ghost who is afraid of humans, along with a lady ghost, his mother, and Uncle Gerundio, the ghost who once haunted Captain Bonanza¿s ship but now dozes peacefully in his trunk. Pata de Palo wants to use the little girl to help him find the Captain¿s treasure. When he sees the ghosts, however, he is terrified and flees the enormous mansion, leaving Maribel all alone.
