U & I and The forgotten princess

Jane and Ariel came across a new boy at school, now Jane, Ariel,Billy& Jim will have adventure out of this world.When they came across a wired looking door and take them to a place where they can go whenever they want to.But Know Ariel,Jim,Jane & Billy will have to find the princess of U&I before time runs out and The time lord called Lily will take over the kingdom of U&I.