at the end of hyperdrive they tell you the humans have arrived at N9, but also that Ziltoid has also arrived.
According to the booklet, the humans are trying to find the 5th dimensional (and if you remember, Ziltoid is only a 4th dimensional being, thus making N9 more powerful) Nebulowanine to get him to defeat Ziltoid. N9 shows something to Ziltoid that completely stuns him with its beauty, leaving him confused and vulnerable. Ziltoid retreats to summon the 6th planet smasher.
at the end of hyperdrive they tell you the humans have arrived at N9, but also that Ziltoid has also arrived.
According to the booklet, the humans are trying to find the 5th dimensional (and if you remember, Ziltoid is only a 4th dimensional being, thus making N9 more powerful) Nebulowanine to get him to defeat Ziltoid. N9 shows something to Ziltoid that completely stuns him with its beauty, leaving him confused and vulnerable. Ziltoid retreats to summon the 6th planet smasher.