The 4th installment of the new BIONICLE online animations is now available on LEGO’s website. Here is the official synopsis.

Journeying through Okoto’s most hostile regions, the heroes and Protectors battle onwards to reach the shrines of the golden masks.

Interestingly, it is not yet available on the BIONICLE website, although I expect it will likely be available there soon. As always, they have been added to the archive in both their streaming TS and FLV formats.