Sam explains how she used to be a nerd and now tries to hide that side of her. Flint convinces her to embrace who she really is.

After finding out his mom's complicated past, Steven is left overwhelmed and confused, but never really addresses it. Amethyst tries to help Stven talk about his feelings, but she unknowingly has unresolved emotions as well.

Zarm, a spirit of war and conquest that was once the spirit of Earth tempts the planeteers with power and pits them against each other. Matee's "heart" power breaks him free of Zarm's control, allowing him to eventually save the planeteer's from Zarm's corruption. The planeteers realize that an iron fish ethos will do more harm than good, even if done with good intentions and summon Captain Planet to send Zarm back to his world.

Bright Eyes keeps trying to form words and is very responsive to human stimuli. The apes possess many human-like traits

Chris and Martin find out the hidden power of zebra stripes.