S1 • E1
Joel thinks that his girlfriend is embarrassed to tell her friends that she is dating a caveman.
S1 • E2
Nick gets a job at Norskbild, a home improvement center, through Joel. But when Nick is quickly fired for being a terrible worker, he considers his firing to be a discrimination act against him and immediately files a lawsuit against the company. Meanwhile, Andy scares a woman in an attempt to prove that he is not scary.
S1 • E3
Joel, Nick, and Andy visit a Fruitberry Frozen yogurt-shop, and Nick falls for the hot cavewoman, Heather, who works there.
S1 • E4
Nick takes a job as a substitute teacher and discovers that the school's mascot is an offensive, stereotypical caveman - which leads him on a quest to have the mascot removed. Meanwhile, Andy's search for an accounting job comes to an end when Leslie hires him to balance her books. But he's torn about what to do when he discovers that Leslie has been dabbling in some creative financing for her lover that could both estrange her from her family and land.
S1 • E5
Joel gets a new Homo sapiens friend, Jake, but Nick suspects he's a shaver, a caveman who shaves his body hair in order to pass himself off as a homo sapiens. Meanwhile, Thorne is attracted to the beast in Andy.
S1 • E6
Andy has people coming at him from two different directions: Nick and Joel want him to vote their way in the next election, while Thorne wants him to buy a gun after a burglary.
S1 • E7
Nick causes problems for Joel when his girlfriend Kate refuses to spend the night. Joel starts spending more time at her place and finds he'd rather be with his roommates. In the end, Joel moves back home and they all make compromises to get along. Andy starts working for SodaCo and his coworkers find him rather annoying. The entire office is forced to go through a series of seminars starting with "boundary training" because of him. He figures out that they can't fire him and continues to do all of the good-natured but annoying things that made everyone upset.
S1 • E8
Nick believes he is dying while Joel tries to salvage his relationship with Kate.
S1 • E9
The cavemen celebrate the traditional caveman holiday Long Night.
S1 • E10
Andy participates in Nick's open mic night, and becomes famous for his character of a dumb caveman.
S1 • E11
Neighbors who adopt a cave kid ask Joel, Nick and Andy to be his mentor.
S1 • E12
Joel runs into trouble when he parks in an executive's parking space. Nick competes with Maurice for the attention of his ex-girlfriend, Heather, after Maurice explains his own charm with women in terms of hunter and gatherer roles, classifying himself as a hunter and Nick as a gatherer.
S1 • E13
S1 • E14
Joel Claybrook
Nick Hedge
Kate McKinney
Thorne
Leslie McKinney
Norskbild Girl
Andy Claybrook
Maurice
Caveman Patron
Nathan