A group of aliens has come to Earth to learn about its population, customs,@恐怖蜡像馆2@ etc. To avoid detection, they have taken on human form which gives them human emotions, physical needs etc. WITHOUT the understanding of what they mean or the inhibitions normally @终极囚禁@present in humans. Their leader takes the position of a college professor, their military expert as his sister, thei@十三街@r intelligence expert, supposedly oldest of group takes form of his teenage son. The uninhibited reactions turn everyday events into unusual situations.