Ep 18. Meet The Quagmires

In season 5, episode 18 of Family Guy, titled "Meet The Quagmires," Peter discovers a time machine and uses it to go back in time 30 years. He ends up altering the course of events that led to him marrying Lois and instead finds himself married to her old flame, Gretchen Mercer. Peter initially enjoys his new life with Gretchen, but soon realizes that he misses his old family and sets out to try and correct his mistake.

Throughout the episode, Peter's actions in the past cause a series of events that change the present day for his family and friends. For example, Cleveland never got divorced from his first wife and instead is happily married to her, while Quagmire is in a committed relationship with Lois rather than just lusting after her.

As Peter tries to set things right, he goes back in time multiple times, each time causing more changes to the past and the present. He eventually realizes that the only way to fix things is to let history run its course and not intervene any further.

The episode is full of humorous moments and pop culture references, as is typical of Family Guy. Fans of the show will enjoy seeing alternate versions of their favorite characters and the creative ways in which the writers depict the changes to the timeline.

Overall, "Meet The Quagmires" is a fun and entertaining episode that puts a unique spin on the show's usual formula. It serves as a good reminder that sometimes, the grass isn't always greener on the other side.