A mysterious spaceship descends from the sky and kidnaps the highly suspicious impfinity. Meanwhile, the Plants discover that an evil extraterrestrial force plans to devour Earth. They have to join forces with Zombot Tomorrow-tron this time and embark on a thrilling trip to space. What secret are hidden in Impfinity's body? and what is the extraterrestrial power that wants to devour Earth? can the plant protect their home?