Un sueño eterno amenaza a todos los Matoran de Metru Nui y esta vez sus guardianes, los Toa se encuentran muy lejos de allí. Enterados del peligro que acecha a su ciudad los seis míticos guerreros intenta regresar antes de que sea demasiado tarde.

The Toa Metru begin their long, dangerous journey back to the city of Metru Nui to save the Matoran from their endless sleep. But savage enemies and frightening dangers wait along the way and a shocking surprise lurks in the fallen City of Legends. A surprise that could change the future of the Toa and all that they must protect. Will they be able to overcome these dangers?