At the borders of Heaven and Hell, Gabriel's walk, a minor angel, a Watcher without glory, whose duty is to keep the Doors. But sometimes, nothing is enough to upset the balance. The coming of a child who has unwittingly set foot on the border. The look of a woman ... a fallen angel ... that Gabriel knew before the Fall ... For love, sometimes we risk everything. His soul. Eternity. Or the fragile balance between good and evil, a fragile balance that has always preserved humanity ...