In this case ZhyperMU is based on the book 'The lost Continent of MU' by James Churchward.
In ZHyperMU we have to choose a character and built it up throughout different levels. Level up you r character and meet new people.
You can choose a Dark Knight, Dark Wizard, Fairy Elf or Summoner. Once you'll have level up one of these, you'll be able to choose two more ones: Magic Gladiator and Dark Lord.
Your goal is to reach a maximum level for your character and interact with other players. Choose wheter to fight against them or with them.