What is the main conflict in The Dispossessed by Ursula K. Le Guin?

The Dispossessed was written by Ursula Le Guin. This novel is about the radically different societies on two close planets. On Urras, there are multiple states, each with their own government. On Anarres, there is no government or economic system. Shevek, a physicist on Anarres, wants to break the rules of his world and travel to Urras, not only to speak with other physicists who understand and are excited by his theories, but to promote friendship between the two planets. However, when Shevek spends a little time on Urras, he discovers that utopia is not all he thought it would be. The Dispossessed is a novel of anarchy and individualism, of utopias and paradise.