Jak and Daxter are two elf-like friends that live on one of a group of islands. As usual with many pairs of friends, they are a truly 'odd' couple: Jak is the strong, silent type while Daxter is a seemingly endless source of wisecracks. At some point before the game begins, Daxter is hit by some Dark Eco sludge and is turned into an 'otsel' (part otter, part weasel). Generally, the dangerous Dark Eco sludge is very rare and was stored in various locations at some point in the past by the Precursors. However, there are a group of beings called the Lurkers who are trying to gather all the Dark Eco sludge in the world to turn all of the innocent elves in the world into otsels.
It is up to Jak and Daxter to stop the Lurkers' evil plan and find a way to turn Daxter into his normal elf form.
Demo Story (intro movie)
Jak and Daxter visit the local wiseman to see if they can find some information on how to turn Daxter back to normal. The wiseman says he has been watching the Lurkers trying to obtain the source of Dark Eco on the nearby Misty Island. He decides to send Jak and Daxter to Misty Island to stop the Lurkers.