After being reconstructed, Cytro becomes Max's mission partner, but now both are placed under the direct orders of Forge Ferrous, a new N-Tek field commander instead of Jefferson. This new boss is a freak control with an aggressive and all-for-the-team attitude which contrasts with Max's free spirit, causing several conflicts among them. In response to an emergency call, Max and Cytro are sent to an Antarctican subterranean lab which is also a prison for an unstable N-Tek agent who suffers some kind of mutation due to heavy exposure to chemical contamination.

Max has to investigate a polluted jungle, and travels from outer space to the center of the earth in his quest to unveil this mystery.

In the time before time, six unlikely Matoran find themselves transformed into mighty Toa. The new Toa Metru must prove themselves as true heroes, find the missing Toa Lhikan, and uncover a plot that threatens the heart of Metru Nui.