Everything started with an unexpected meteor shower. Among the burning hot meteors, there were four tiny spaceships. Suddenly, under a mysterious force, the meteors changed their direction and made a right turn. It seemed that their destination was a blue sphere not far away - Earth. In Michigan, there was a quiet and comfortable family where Mr. Stuart Pearson and his wife Nina lived. They had children: Hannah who is years old, Tom who is years old, and their eldest sister Bessie, who had just fallen in love. The whole family decided to relax and planned to go out for a few days. They packed their belongings and came to a vacation cabin in Maine. Along with them were Uncle Knight, his son Jack, dear Aunt Nana Rose, and the twins Art and Lee. However, Bessie's boyfriend Richie showed up uninvited, making the entire travel group abnormally large. In the evening, a strange cloud surrounded the vacation cabin. Lightning flashed, thunder roared, and suddenly, a strange object landed directly on the roof. Then, four aliens came down from the spaceship. They were the ship's technician Skip, the fearless captain Tazer, the muscular Rizer, and the only female member Spicks. These alien creatures came from a distant planet. Their superpower was using advanced technology to control people's minds. The careless Richie unfortunately became a puppet under the aliens' control. With Richie's assistance, the aliens captured several children, but Tom and Jack managed to escape. Soon after, these children discovered that the aliens' mind control only worked on adults and was ineffective on children. This gave the children and these unwelcome guests a chance to compete. They used their wits to create many strange toy weapons and went to war with the aliens. The clueless adults didn't know what happened; they thought kids were just kids, always liking to play around. At this time, a touching friendship developed between Hannah and Spicks. As the only female, Spicks had no interest in fighting; she just wanted to go home. This alien with four arms and four hands was soft-hearted and loved peace. Through her friendship with the children, she gradually hoped to end the war with her own efforts. Thus, she joined the human side and fought alongside the children. The battle continued, and laughter echoed. Perhaps these aliens did not come to destroy the Earth; they might just be messengers.