The Ghost vs 7 Billion Vampires

Mars’s Vampire King poisons Earth’s soil, makes it infertile for agriculture and makes people starve to death without food,  And also murders a farmer's family of twelve.  Broken by grief, Leo receives a Magic Bottle from a 300 year old Sage that brings his family back as Ghosts,  but they only have a strict few months time limit before vanishing forever.  And in between all these challenges, some mystical elements come into Leo's life and how does he manage that? Then Leo gets a Magical Mystic "Gem" Watch which has miraculous powers and learns to use it. Leo sells everything, buys a private rocket and desires to invade Mars of seven billion vampires. Will he be successful? or some twist is waiting for him? Can Leo use his Magical Mystic "Gem Watch" and his "Family Ghosts" against the King of the 7 billion vampires of Mars and defeat them?  Can Leo build a massive spaceship nearly the size of Earth to bring all humans to Mars?