No No Ai-chan! The Big Toothbrushing Plan!.Ange explains that Ai is not only someone who gives the PreCures power, but also serves as a shield to protect people's hearts from the Jikochu. With Ai entering her impulsive stage, Ange informs the girls that they will need to raise properly, lest she lose her powers and allow the Jikochu to gain power. Discovering that Ai has grown her first baby teeth, the girls start training her to brush her teeth, only to discover that Makoto, who was unaware of the existence of cavities, has one herself. The girls take Makoto to the dentist to get it treated, but becomes scared of the dentist's instruments and runs off...