What a happy group of people are gathered together at Senor Perada’s hacienda but in all this joy there are a few dark clouds on the horizon. Ivan Shark has escaped and also what has happened to Major Barry Steel and Bud Connolly who flew away in Captain Midnight’s Spartan cabin plane and from whom nothing has been heard…?

After the Fiesta celebrations Chuck and Patsy hear a mysterious voice on the planes's radio of someone asking for help. Could it possibly be that of Major Barry Steel or is it Ivan Shark? That will be found out in the next adventure of Captain Midnight and his friends!