Two parallel worlds occupy the same space, unknown to each other. But if one prospers, the other withers. The dying world of Sylvarant has one chance to survive. Colette, the "Chosen One," is sent on a journey to replenish her planet's supply of mana, the source of all life. In exchange, though, she must become an angel, leaving her human life far behind. Colette is joined on her travels by childhood friends Lloyd and Genis, who swear to protect her. However, as they get closer to their goal, the Tower of Salvation, the group learns the terrible truth behind "world regeneration."
—Crunchyroll