When a new danger looms over the galaxy, Usagi Tsukino, or Sailor Moon, rallies her fellow Sailor Guardians to defend Earth. An alien duo, An and Ail, threaten the planet by draining energy from humans to sustain their Makai Tree. As they thwart this peril, a young visitor from the future arrives, seeking Sailor Moon's power to rescue her family amidst competition from the malevolent Black Moon Clan. To safeguard the universe's balance and their own fates, Sailor Moon and her allies engage in a fierce battle against these formidable adversaries.