A fateful phone call shakes up the normal routine in the Sanzenin household. Is it an invitation from outer space? Area 51 is a military base that routinely attracts gray/secretive missions, UFOs and other un-worldly things. Nagi is intent on going there, but Maria says it’s too dangerous to go. Hayate laughs at Nagi who knows very little about the world. And so the story begins…
It's dangerous around here lately, 
so be careful on your way home!
¡Últimamente afuera está algo peligroso, 
así que ten cuidado regresando a casa!
Últimamente pasan cosas raras en el barrio, ten cuidado al volver a casa.
Ei, está um pouco perigoso por aí, tenha cuidado e volte para casa!