When Clive and Aqua, two Angel hunters, accidently kill the Devil's daughter, they have to face the consequences. Naturally, the Devil isn't very happy with them, and as punishment, going to give them 3 tests that they must pass in order to live. But these tests aren't just tests, they're supernatural ones that are almost impossible to pass. Most people don't survive the tests, but Clive is sure that they will pass, but Aqua isn't quite as confident. Without being able to train, the two siblings are face to face with great danger, and death itself. Will they get through the tests and live? Or will they die at the Devil's feet?