Jack and the Dark Gods

The desert winds blew and kicked up clouds of dust, although this did not worry the lone warrior, known only as Jack, as he walked the path that no one else could see. As he walked, he thought of of one of the most powerful entities he'd ever seen. The memory was still fresh in his mind of the sun god, Ra, as he effortlessly destroyed the Minions of Set. This memory was also fresh in the mind of another. "How!? How!?" roared the demon-wizard, Aku. "How can it be that I have overlooked such creatures! This is indeed most troublesome." said the ruler of the Earth, stroking his flaming beard. "WAIT!" he shouted. "Yes, of course that is the answer. Muahahahah!" Jack's wanderings had taken him to a fairly Greek-looking town and sighed in contentment. After all the humongous cities of concrete and evil, it was nice to find cities quite like from his time. He saw one of his wanted posters on a wall and quickly tore it up. He then walked into one of the nearest buildings to find out where he is. "Welcome, welcome, good sir!", proclaimed a disturbingly jovial bartender. "Can I get you anything?" "Um, no thank you, however I would like to know where I am?" asked the samurai. "Well, the name of the city is Malabria, but I don't know too much about it besides." "Oh. Well, I will be going then. "No, no, stay, I insist!" It was then that Jack noticed that the man was reaching for something behind his back. Almost without thinking Jack unsheathed his sword, sliced through the gun, and kicked the man into the bar. He sheathed his sword and calmly walked out, much to the amazement of everyone. Jack continued trekking through the city, he noticed a large patch of ground that was withered. He followed it, and found more of the same, untill he came upon a giant, hideous, leech-like creature was sucking out the life of the ground. Suppressing a gasp, Jack recognized the swirling black and the vague feeling of evil. This creature was a part of Aku! He followed the monster, in hopes it would lead him to hisChief Nemesis, but lost track of it when he came to a great, round building with no ceiling. He had seen this structure before, in Ancient Greece. It was. a collisseum.

What will happen to Jack in the collisseum? (Hint: Slash slash slash! AAAAAHHHH!!! BOOOOM!!! Yay onomatoepoeia!) Also, what is Aku's nefarious plan? Can't you tell by the title/summary?

Disclaimer: I do not own Samurai Jack.