Mystery of Metru NuiUnknown - 2003
"The city of Metru Nui is divided into six parts. Each part has a guardian -- a Toa -- who watches over the Matoran who live there. However, something strange is happening: Matoran are vanishing and a mysterious plant is destroying the city piece by piece. The Toa have to stop the disappearances and find a way to save their city. Do they have the skills to solve this mystery? Or will they finally meet their match?"
Publisher: New York : Scholastic, c2003.
Characteristics: 122 p. : map ; 20 cm.
Alternative Title: Bionicle