Harry Vanderspeigle (Alan Tudyk - Firefly ) is hanging out in his cabin in the woods in a remote part of Colorado, USA. A UFO crash-lands nearby, so its pilot kills Harry and disguises itself as him. Now the alien tries to pass as a human at least until it can recover its cargo and complete its mission.
Sheriff Mike Thompson (Corey Reynolds - ) and Deputy Liv Baker ( Elizabeth Bowen ) conscript Harry-the-Alien into helping investigate the death of the town's doctor. Luckily the alien has been learning to speak American English by watching re-runs of Law and Order. The death looks like suicide, but the nurse Asta Twelvetrees ( Sara Tomko ) insists it must be murder.
Harry Vanderspeigle (Alan Tudyk - Firefly ) blends in by taking over ads the town doctor. He realises his biggest problem is the little boy who can see through the alien disguise. Unfortunately, spending time in human form means he has developed human emotions.
The whodunnit sub-plot is ignored this week. However, a new alien-hunter sub-plot begins.
The nosy little boy befriends a little muslim girl.
It turns out that a couple of plain-clothes Military Intelligence types are searching for aliens.
The nosy little boy and his gal-pal decide to search Harry's place while he is out of town.
Harry Vanderspeigle (Alan Tudyk - Firefly ) discovers that his wife is in town. Well, technically she is the real Harry's widow. Anyway, he has to stop her from discovering the truth. She assumes he is on the run from debt collectors, because some mysterious men were looking for him in New York City. Naturally, Harry does not bother to enquire any further.
Nurse Asta Twelvetrees ( Sara Tomko ) has family problems of her own. The daughter that she secretly gave up for adoption is doing work experience in the clinic.
The nosy little boy continues to insist that Harry is an alien. Luckily, Harry develops a non-violent strategy and convinces the parents to send the kid to a boarding school thousands of miles away.
This episode starts with a couple of flashbacks. General McCallister ( Linda Hamilton ) is finally introduced, and the two storylines start to converge.
Harry Vanderspeigle (Alan Tudyk - Firefly ) gets replaced by the Mayor. Unfortunately Harry becomes jealous of his replacement, a smug know-it-all who steals Harry's thunder at every opportunity. Also, Harry's wife seems intent on coercing him into having sex.
The Sheriff and the Deputy start to make progress in the murder investigation.
Harry Vanderspeigle (Alan Tudyk - Firefly ) realises his spaceship has been been taken. He recruits an unlikely ally to help him. Yes, it turns out that one of the locals sees The Green Glow around alien artefacts.
The Sheriff and the Deputy start to make progress in the drugs investigation. She takes a leaf out of the Agent Carter book of hot pursuit.
Harry Vanderspeigle (Alan Tudyk - Firefly ) and his two lady friends are stuck in a crevasse. One of them tries to get to the top. The other tries to keep Harry alive. Unfortunately his injuries mean he can no longer maintain his disguise.
Harry Vanderspeigle (Alan Tudyk - Firefly ) lost his leg due to the injuries from his fall into the crevasse. Now he has to grow it back.
The MIBs have arrived in town. They schmooze the mayor and his wife.
Harry Vanderspeigle (Alan Tudyk - Firefly ) has the special device that he needs to complete his mission. Now he has second thoughts about it.
The MIBs close in on Harry. Their first target is the nosy boy, Max.