Usagi finds herself teamed up with Seiya for the annual school softball tournament. To make matters worse, Isagi becomes a target of Seiya's fans, who think she is hitting on him.
As Galaxia closes in to take Sailor Moon's star seed, the Light of Hope finally reveals itself. Turning into a sword, the Light of Hope begs Usagi to use its power to stop Galaxia, who is now fully consumed by Chaos.
Princess Kakyu, the missing princess whom the Star Lights have long been searching for, finally appears before the Sailor Guardians. Princess Kakyu explains that she has come to Earth in search of the Light of Hope.
Fisheye discovers Chibiusa communicating with Pegasus, but refuses to cooperate with Zirconia's plans. As Hawk's Eye pursues Usagi for her Dream Mirror, Zirconia decides that the Amazon Trio have outlived their usefulness.
Princess Kakyu perishes after being defeated by Galaxia. Devastated, the Sailor Star Lights go after Galaxia to avenge their fallen princess. Meanwhile, Sailor Moon and the rest of the Guardians also prepare for their battle to protect the galaxy.
After defeating Kunzite, regaining their past memories, and discovering the Dark Kingdom's hideout the Sailor Senshi head for the enemy, but they must prepare for the ultimate sacrifice.
Minako is close to realizing her lifelong dream of become an idol after making it to the final round of auditions in a talent-search contest. But Minako is now thinking of turning down the offer, as she cannot ignore her duty as a Sailor Guardian.
Mamoru tells Usagi that he's accepted an offer to study abroad in the U.S., which will force them to have a long-distance relationship. Saddened at first, Usagi eventually decides to root for her boyfriend's dream and sends him off with a smile.
