After narrowly surviving an assassination attempt by a ninja, Nyle Maxwell (Winter) learns of a new ninja guild on the block. Its goal is to conquer all of Adventure City and force player and NPC alike to bow to their master's rule. Such an event threatens to spark a war between the two biggest ninja guilds in the city, a war that will tear the city itself apart. Things get worse when Nyle gets infected with a deadly virus that will turn him into a mindless zombie in three days' time. Now Nyle must stop the coming ninja war and find a cure for his virus before it's too late. But how do you cure an incurable virus?