Zach Loud and Darien Shields's childhood friend, Fiore returns with the promise of giving him "beautiful flowers" to rekindle their friendship, the Sailor Scouts learn that he behind the appearance the Kisenian Blossom: an energy draining entity who plans on destroying the plant with Kisenian Blossoms. When Zach and Darien are kidnapped by Fiore, Lincoln, his sisters, and the Sailor Scouts attempt to save him and prevent the Kisenian's hollow planet from spreading her blossoms on Earth.