Isabelle, a.k.a Angel I, is a beautiful angel in white. But when her sister Eleanor dies, will she ever smile again? She turns into a dark angel with moodiness, sorrow and black! Who killed Eleanor? Who erased the smile on their faces? This Dark Angel's spirit goes on possessing everybody. What's its hidden secret? ... Who would have thought Angel Agatha and Angel Daniel would turn Angel Isabelle back to her usual form? Assistance turns into Love... Will their love win?