Five years ago, something horrifying happened on Kamioki Island. Something so nightmarish that it stripped all memory from Mari Wakatake's mind even as it left every other human on the island dead in its wake! Now enrolled against her will at an isolated girl's academy, Mari is unaware that hidden eyes are watching her, waiting for her memory to return. Buried in her psyche is the most terrifying secret of all: while Mari was the only human who lived, she may not have been the only survivor! As something in a female skin invades Kaihou Academy, Mari's only hope may lie in a strange girl to whom she is inexplicably drawn yet cannot trust. (Source: Sentai Filmworks)

Even though the Decepticons have been driven off Earth, a small team of Autobot Pretenders have remained behind, just in case. Led by Metalhawk ("Hawk" in his human identity), the Pretenders live among the humans, using their Pretender shells to assume human size and appearance. The Autobots' caution is rewarded: Decepticon Pretenders soon appear, led by a mysterious force called Devil Z. The Autobots and Decepticons soon build up their forces, recruiting humans to become Junior Headmasters and Godmasters (Powermasters).

An action comedy set in the solar system, about a row over Himawari, Shinnosuke's younger sister, between the Nohara family and aliens. Shinnosuke has a fight with Himawari, because she ate his crème caramel. Suddenly, two mysterious men appear and Shinnosuke signs an agreement to leave her with them. They abduct the Nohara family to the Planet Himawari by UFO. On the Planet Himawari, Sunday Goronesky the Great says Himawari needs to be the princess of the planet in order to save the Earth and the Planet Himawari from the fateful crisis.

(Source: Manabu Tsuribe)

Hiromi continues developing her tennis and shows the results while undergoing an emotional change into an adult. (Source: AniDB)