Pretty Guardian Sailor Moon Crystal/Summary/Season Two

The mysterious girl called Usagi, or Chibiusa, demands the Silver Crystal from Usagi and later incorporates herself into Usagi's family using hypnotism. Meanwhile, a shady group, who call themselves the Black Moon Clan appear as well. Following the advise of a shadowy figure named Wiseman, they plan to invade Earth and find and kill Chibiusa. Sailor Mars, Mercury, and Jupiter get abducted by Koan, Berthier, and Petz of the Black Moon Clan, respectively, while trying to stop them. Sailor Moon, Venus and Tuxedo Mask are told by Chibiusa that she is from the future and only they can save her home from the Black Moon Clan. Chibiusa uses the Time Key to open the path to the future, where they meet the guardian of the Time Gate and Chibiusa's friend, Sailor Pluto. When they reach the future known as Crystal Tokyo, they find it in ruins from the Black Moon Clan's attacks.

Sailor Moon is kidnapped by Prince Demande of the Black Moon Clan, who is obsessed with her unmistakable resemblance to Neo Queen Serenity. King Endymion, Tuxedo Mask's future self reveals the history of the Black Moon Clan, its base on Nemesis, the tenth planet, and that Mamoru and Usagi are married and Chibiusa is their daughter. Chibiusa runs into the Time Gate with Tuxedo Mask following behind, causing them both to be lost in the time stream, and Chibiusa is eventually brainwashed by Wiseman. Sailor Moon is able to free herself and her fellow Senshi from Nemesis and they escape to Earth. Chibiusa, now Black Lady, believing she was not loved in her home, attacks Crystal Tokyo and Wiseman's true identity is revealed as an evil entity known as Death Phantom, who had merged with Nemesis years ago. Demande, having gone mad, was able to obtain the Silver Crystals of past and future and threatens to touch them together, which would end all existence. Pluto shows up and stops time, but at the cost of her own life. Seeing her only friend die causes Chibiusa to break free from Death Phantom's control and she transforms into Sailor Chibi Moon. Sailor Moon, and Sailor Chibi Moon use their power to destroy Death Phantom. Chibiusa goes back to the future but returns shortly to receive proper Sailor Senshi training, and gives Usagi a present from her mother: the Heart Moon Rod.