Zenon, a 13-year-old girl, lives in a future where she gets in trouble and is punished by being banished from Earth. She then travels to a space station in outer space, where she forms new friendships and discovers a computer virus that threatens the entire station.

In Zenon: Z3 (2004), set in the year 2050s, Zenon embarks on an adventure to rescue a trapped dog on the moon amidst a full moon and a cheering fandom.

Zenon returns in this sequel to save the day when her space station home is threatened by an evil villain. With the help of her friends, Zenon must use her wit and bravery to defeat the antagonist and ensure the safety of everyone on board.