When a little boy meets a stranded alien child, the two quickly become friends, but at bedtime, the alien suddenly grows very sad, and the boy tries to figure out what his new friend needs to be happy again.

Secret agent Bubble07, who exactly resembles a stuffed toy, is on Earth to assess whether or not the unicorns should invade the planet--but despite some bizarre Earth customs like show-and-tell, and annoying Earth dogs, ultimately suggests that Earth would serve as an excellent vacation destination for unicorns.