With the adults possessed by alien invaders, can Nick, Jessie, and Frasier save their town? Twelve-year-old twins Nick and Jessie are woken up in the middle of the night by a blazing white light followed by a loud explosion. As they rush to the window, rain suddenly begins pouring down, and the water starts to glow. It is the strangest thunderstorm they've ever seen, and it stops as quickly as it started.   Nick has a feeling it may not have been a storm at all, but visitors from another planet. When he and Jessie decide to investigate a strange sound downstairs, they find their mom and dad digging a hole in the basement. At least, they think it's their mom and dad. But since when does their mom let them eat all the junk food they want, and why isn't their dad going to work?   Nick and Jessie know something is wrong, and if their hunch is right, their parents' bodies have been taken over by aliens. It's up to Nick, Jessie, and their best friend, Frasier, to solve the mystery and protect their town from an extraterrestrial threat.