Time-shifted to the past, three twenty-first century children fight to survive or risk being lost in time forever.

When Maisie Brown is time-shifted to 1471 during a school trip to Warwick Castle, it's the beginning of an adventure bigger than she could ever have dreamed of. The only problem is she has to share it with Lizzie Andrews, the class bully, instead of her best friend Danny Romano, who has managed to get caught up amongst the Earl of Warwick's army marching towards the Battle of Barnet.

Determined to save Danny, Maisie and Lizzie leave the safety of the...