The battle for the fallen

Nightingale college is not your ordinary school. For starters, paranormal folk (demons & angels) also attend amongst the humans. Only several know of this. The provost (headmaster), the watchers and Daniel Jones. Daniel is a fallen angel. Fallens forget about their previous life when they fall and become human, but Daniel didn't. Most fallens die before the age of 17 but Daniel lived. Now Daniel and his other fallen friend (Rachael) attend Nightingale Collegebut this might be the worst mistake of their lives when Daniel finds out that the arch angel Jonathan, is out to get Rachael. But the difference between Rachael and Daniel is that Rachael doesn't remember and with Jonathan out to get her, how can Daniel protect her from something she won't see coming?