Santa Claus Conquers the Martians

After finding that the children of the planet Mars are lethargic from watching Earth based television programming, lately secular Christmas news items specifically around Santa Claus (it being the approach to the Christmas season on Earth) and after consulting with one of their elders about what to do, Martians decide to kidnap Santa Claus, knowing nothing about him, and bring him back to Mars to do whatever Santa Claus does. Needing to sift through the plethora of Salvation Army and shopping mall Santa Clauses on Earth, they ultimately are able to kidnap the real Santa Claus. Santa Claus' disappearance may threaten Christmas on Earth. The first problem the Martians encounter back on Mars is that, out of circumstance, they also have to kidnap two innocent adolescent Earthlings, brother and sister Billy and Betty Foster. The Martians, led by Lord Kimar and ultimately his wife Lady Momar, don't want any harm to Santa Claus or the Foster children, but only want the Martian children to be happy, which may mean keeping the three Earthlings on Mars forever. However, there is an opposing Martian faction led by Voldar, who don't want Santa Claus on Mars and will do anything needed to get rid of Santa Claus. What happens between these two opposing factions may be affected by yet another Martian, Dropo, who is a large child is a large Martian's body. If Santa Claus, and Billy and Betty are able to survive this situation, is there anything they can do to convince the Martians to send them back to Earth so that Earth children can have a Merry Christmas?