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Stewie impregnates himself with Brian's DNA to save their friendship, while Peter and the guys try to make a viral video.

When Stewie wants to hang out with Brian, he is blown off. He feels that his and Brian's friendship is drifting apart, so after he sees Joe and Bonnie with Susie, he decides that the way for them to bond again is to have a baby. He creates a machine that takes a sample of Brian's DNA that he acquired and injects it into himself. He shares the news with Brian who understandably freaks out, realizing what people are going to think about what has been done and encourages Stewie to get an abortion. When Stewie ignores him, he tries to induce one.

As time passes, Stewie goes through the pregnancy stages and has Brian take him to the doctor for prenatal care, clothes shopping and photographs of his pregnancy. At McBurgertown, Stewie's water breaks and he and Brian try to get to the hospital. But when they don't make it, Brian is forced to deliver the baby himself in his car, only to find it is an entire litter of Stewie-Brian hybrids. Raising the kids, Stewie encourages Brian to have a second try at parenthood after failing previously with Dylan. Taking the kids to the park, they find that many of the kids have birth defects, which causes them concern over the cost of their care. When Brian tries to get away for awhile, they find that their moods were setting each other off so they decide to ditch the kids at an animal shelter and go back to the way things were.

Meanwhile, the guys see a viral video on the news and decide to make their own. Bouncing around ideas, they head out to just start filming. Joe tries his hand at impressions. Later, after seeing a video in which a monkey raped a frog at the zoo, they film monkeys watching a dancing female frog at the bar. Their videos flop on Youtube but later on the news, a video of Chris trying to cross the street by someone else is featured.