ข้อมูลอนิเมะRed Garden

Kate, Rose, Rachel, and Claire are four New York girls who cannot recall what events transpired the previous night. While at school news spread to the student board that the NYPD found Lize's body left at Central Park. Kate, who was close friends with Lise, breaks down and takes the rest of the day off. As the night falls, she and the other three girls are led by butterflys that only they can see to the same place and are unexpectedly approached by a woman wearing a black suit. She asks them if they can remember the previous night when all of them died.

The four girls are at the mercy of a man whose behavior sounds exactly like that of a rabid dog. The stranger is run over by a bus soon after Rachel displays a supernatural ability to break free from his grasp. Aghast and in shock all four are approached by the mysterious woman, who calls herself Lula, and explains them that are living on borrowed lives and from now on at every night they will be needed to hunt and kill demons for 'them'. If they break the contract, all will die.

Lize's father asks Kate about his daughter's diary and thanks her for being friends with Lize. The four girls become upset upon finding Lula also attending Lize's funeral. She gave them a red seed and explains to them to plant it if they want to know the truth. She later takes the four girls to witness another group of girls in the same situation as them, but having lost their will to live as they are brutally murdered by another beast man. The four girls plant the seed, and it blooms into a red flower at night, influencing the girls' memories as they finally recall the fateful night when they found Lise dead and were murdered by orders of a man in a white suit.

Kate starts to befriend the other girls to help them cope with their current situation, quickly earning Rose's trust and friendship. Both decide to pay a visit to Rachel and Claire. However, the socially withdrawn Rachel disdainfully chases the two of them out of her house alleging that it is no use to resume their normal lives since all are already dead. Meanwhile, Claire by herself is searching for the place where they all supposedly died.

Rachel breaks down due to having killed another beast man in another night mission forced upon them by Lula. Rose collapses in tears feeling herself unneeded when her siblings tease her that they don't want her. Kate and Claire go and investigate the manor where their deaths took place to find any clues about the truth.

When the girls are once again summoned for another fight Rachel loses her sanity and escapes. Kate and the others follow after her, learning from Lula that if even one of them strays from the group during a mission then all will die. Rachel is found and brought to her senses but has lost the will to live. Lula offers the girls a hope to return back to their former lives, but the cost involves showing them the grisly truth.

Hervé recalls his mother's death when he was a child. He goes to visit Dr. Bender to check on the health of both Anna (his sister) and Mireille (his cousin). Mireille suddenly falls ill and is diagnosed with the same symptoms his mother possessed at the time of her death. Knowing that Mireille won't live long, Hervé goes to see his grandfather to request to attack that "group", but he is ordered to wait. That night, Hervé, unseen, watches the four girls killing another beast man and in disgust silently reproaches the viciousness of their act.

A time of relative peace has come, allowing Kate, Rachel, Rose, and Claire to know each other better and coexist together. As they have dinner at Claire's home, Kate comments how fortunate they have been to receive a chance to return to their normal lives. Claire replies that even if their lives are not what they used to be, all of them are friends to each other that spend time and have fun together.

Unable to find a job to pay for the rent, Claire reluctantly goes to her brother to ask him for money. Rose and her siblings visit their hospitalized mother, while Rachel bumps into her school teacher by accident and both have a friendly chat at a cafe. Meanwhile, Kate spies upon Lula and JC but is soon spotted by Lula. Kate inquires about the mystery of their new bodies to which Lula replies that Lize's and their bodies are being targeted to be used for reproduction for the sake of a certain family clan's survival.