The girls arrive on Planet Saman, a planet largely influenced by AI, and meet Lala's family, including her twin brother Lolo. As Lolo is commended by the Space Alliance for finding a Princess Star Color Pen, he states that the alliance is interested in working with the Precure. This leaves Lala conflicted about whether to give a proper report on what they've been doing, leading Madoka to sympaphise with her and ask her what she wants to do. Just then, Tenjou attempts to steal the Star Color Pen by turning the head scientist Kuku into a Notray. Although the Cures manage to defeat the Notray, Kuku assumes that Lala is trying to steal the pen, putting out a warrant for the arrest of her and her friends.

Taking advantage of the confusion, Eyeone hacks into Saman's Mother AI and takes control of all the AI devices on the planet to lure the Cures out and capture them. However, Lala's AI sacrifices itself to protect the girls with the rocket. Eyeone attempts to have Mother take over the rocket, but Lala's AI manages to connect its data with Mother to undo the hacking and release the Cures. Revealing her identity as a Precure to her family, Lala uses the pen Lolo found to beat back Tenjou and Eyeone and revive the Cancer Star Princess. Afterwards, Lala's AI manages to return with its personality intact before the girls make their way back to Earth, unaware that the Space Alliance is following them.