'Twins Archer and Mimi Price are 12 years old. Their grandfather vanished 30 years earlier.
'No one has any answers, but Archer is convinced Nan's attic might. Mimi won't help; she prefers soccer. Following non-stop pressure from Archer, she agrees.
'They discover a mysterious cube, which transports them to Neven, an ancient medieval kingdom. The twins have no clear-cut way of returning home.
'Toby, street kid and dog poo collector, talks his way into their trust. They hope Toby will keep Toby will keep them safe from Neven's angry King Francas, a diabolical wizard and a dungeon straight out of a bad video game.
'Archer wants to find Grandad. Mimi wants to be home in time for kickoff. ' (Publication summary)