Ep 3. Nannies

In How I Met Your Mother season 8 episode 3, entitled "Nannies", Marshall and Lily are still adjusting to parenthood with their new baby, Marvin. They are struggling to find a reliable nanny to help take care of him while they both work. After a few failed attempts, they finally find a nanny named Zoey (played by Katy Perry) who seems perfect for the job.

Meanwhile, Barney is trying to adjust to living with his newly engaged best friend, Ted. Ted is constantly planning his wedding and Barney is feeling left out. He decides to plan a "bro night" with his old friend, Robin, but it doesn't go quite as planned.

As the episode progresses, we see Marshall and Lily become increasingly attached to Zoey. She seems to be doing a great job taking care of Marvin and they start to view her as part of the family. However, things take a turn when they discover Zoey's true identity and they are forced to reevaluate their relationship with her.

The episode ends with Barney making a big decision about his future and Ted coming to terms with his own feelings about the wedding.

Overall, "Nannies" is a heartwarming episode that explores the challenges of parenthood and the importance of finding the right kind of support. It also delves into themes of friendship and loyalty, reminding us that sometimes the people we think we know best can still surprise us.