19 year old Roy Harper, also known as Red Arrow, has always been a little weird. But now, he's told he is a Half-Blood and has to go on a quest to try and prove that the Gods shouldn't kill him because of his parentage. Hopefully, he won't die.

Turns out that one of the Young Justice members isn't even from Earth-16. In other words, the Young Justice dimension. What happens when people from the other dimension come over and demand for him/her to return? What if they don't remember the other dimension at all? They've been on Earth-16 all their life... that can't, won't, just leave. But will they?