After insulting the Hemkas while talking to a Mirror Plant, Hanazuki must make things right with them in order to help rescue Pink Hemka from a slow sand pit.
Hanazuki meets another Moonflower named Kiazuki and is excited to make a new friend like herself. However, there is more to her "Moonflower sister" than she lets on.
Kiazuki tells Hanazuki about the dark force that threatens to destroy her moon and everything on it, but is more concerned with growing her own Treasure Tree to be of any help.
Hanazuki meets the lovable Doughy Bunington on the Dark Side of the moon, and finds out he was exiled there for a crime he accidentally committed long ago.
While Hanazuki prepares for their next plan of attack against the Big Bad, the unconfident Hemkas help Kiazuki build a new spaceship for them to escape on.
Hanazuki turns to Basil Ganglia, the mastermind who helped Kiazuki build her getaway ship, to help them against the Big Bad. To her annoyance, Basil decides to take full advantage of the attention.
When Chicken Plant lays another monster egg at the same time a dangerous Mazzadril comes close by, Hanazuki has a plan to pit both monsters against each other.
Zikoro yearns to return home after being left behind by Kiazuki, but Hanazuki wants nothing to do with her anymore and would rather help Zikoro some other way, with disastrous consequences.
Hanazuki has a hard time convincing Kiyoshi, the Moonflower of Sleepy Unicorn's moon, to come out of hiding in order to aid the other unicorns in overthrowing Twisted.
Hanazuki tries her best to resist Twisted Unicorn when he comes looking for Kiyoshi, but her friends have conflicting ideas that may let Twisted have his way.
Another Moonflower named Maroshi saves Hanazuki's life, but her gratitude is short-lived when it turns out her friends not only know Maroshi, but appear to be happier to see him than Hanazuki.
Kiazuki takes charge of Hanazuki's friends in repelling the Big Bad's latest attack, while Hanazuki searches desperately for the Hemkas when they get separated in the chaos.
Hanazuki seeks out a cure when Red Hemka falls gravely ill; Kiazuki goes off the deep end after her first victory against the Big Bad doesn't go as expected.