At the end, you finally get the Infinity Blade and defeat the God King, and bring his evil empire crashing down. Or... so you thought. After killing the God King, a mysterious blue orb comes down from the ceiling. You are never seen again. Years later, your son vows to take revenge on your death and kill the God King. That's right. Somehow, the God King is still alive. Your son discovers that the Infinity Blade, which is now in his possession, unlocks a secret tunnel in the Dungeon of the God King's castle. In this tunnel, are five of the deathless, who are even stronger than the God King himself and locked up. After you defeat them all with the Infinity Blade, which is the only sword that can kill them, a new chamber opens up. when you walk into it, you discover several large, green tubes, each with a God King inside. Then you realize that the God King is not immortal, he simply activates a new version of himself each time he is killed! Then a voice comes from the sky, asking for the Infinity Blade. When you refuse, a large, futuristic robot-like creature comes from the ceiling and attacks you. I have not been able to beat this character yet, but I've come close. I'm guessing that after you defeat him, you will have to wait for the next update to Infinity Blade to continue the story. That's only a guess thought.
(Story Update: After defeating the robot, a man steps out of the robot, claiming to be your relative, saying "our kind has served the blade well." After you defeat him in battle, he reveals that you and your family members who have battled the God King have been used, just to make the blade stronger. As he dies, he tells you that "He is coming" and that when he gets the blade he will be unstoppable. You then reply, "When he comes, I will be ready." The game then ends there.
I really hope they make a sequel to this, because it is a great game with a great story.)
Update: Infinity Blade 2 is out! It follows your character as he searches for the creator of the Infinity Blade.
Update: Infinity Blade: Dungeons is "coming soon." It is a prequal to Infinity Blade 1 and 2. Click here to see the trailer.
Update: Infinity Blade 2: The Vault of Tears is out. My page explaining the plot of VoT and a walkthrough and story updates is here.
Update: Infinity Blade 2: Skycages is now out. Check out my walkthrough and help page here.
If you don't have Infinity Blade yet, and you own an iOS device, get it now. It's on sale on the App Store right now.
If you need help beating Infinity Blade, their is a big community of people willing to help in the comment below. Be sure to comment if your stuck! We will help you!