Infinite are the mighty and the most perfect powerful warriors of BTD, a world you never thought existed. They came to your world to find a mighty princess whom had been lost from their world for a hundred years. Yes, they are immortal. A nearby world, HALO, their long time rival, came to their world to destroy them once more. Only the princess can save them from this mischief and horror.

You, Im Minsu, an ordinary girl who lives her life as happily as possible with both parents alive. The thing is, ever since you’re young, you never notice them growing old at all. They look so young that your classmates mistake them to be your siblings. Both your parents never told you stories from your past and restrain you from asking them about it. What if one day, a group of 7 guys came looking for you, what would you do? Who are they?

Block B on the other hand, is the 7 most highly powerful people in their world, HALO. They plan to destroy BTD again in order to capture you as you were the most powerful being in the whole universe. They needed you in order to claim the whole universe as theirs. With the discovery of you being hid upon earth, would they come and destroy earth as well just to get you? Will you able to protect both the earth and BTD from them?