From University Games website:
The evil Piraka have invaded the island of Voya Nui and are now on the hunt for the powerful Mask of Life. Take up the Toa Inika mission to find the Mask before the Piraka. Traverse the island carefully, and be ready to go to battle along the way. Includes 6 exclusive collectible Toa Inika game pieces, a double-sided game board, a Protodermis ball launcher with Zamor sphere, a Piraka target, 50 Quest cards and a die.
(The Lego website has a slightly different description at http://shop.lego.com/product.asp?p=G1754.)
The game purports to be for players ages 8+.