Mopsworth Custard : Zombie Invasion of Earth

Murray the Martian is the first Martian Ambassador to Earth. Murray is very excited. The Queen of Mars is preparing for her first State Visit to Earth. She is planning to meet many heads of state. The US President, the Queen of England, Snow White, Santa Claus and the Sheriff of Nottingham. But trouble is brewing. Zombies on Mars are planning to take over the planet and then invade Earth. Can Captain Zac, Wing Commander Maya and Professor Dan stop the invasion of Earth and save Christmas?