Gabriel is a keeper of souls. He has been watching over them for millenniums. But one soul is different -- the first time Gabriel holds it in his hands, he knows it is remarkable. For this soul causes something inexplicable. Gabriel feels. Falling for a human isn't possible; but when that soul grows into Luke Lawson, Gabriel can't contain his growing feelings. Not knowing where to turn or what to do, Gabriel keeps vigilant over Luke and is surprised repeatedly when Luke knows he's there. It isn't possible. But it's happening. As time passes, Gabriel's feelings for Luke intensify, and Luke's heart reciprocates. Can love overcome everything? Can Gabriel truly fall?