Ep 10. A Hard Day's Knight / I, Brobot

In Phineas and Ferb season 1 episode 10, titled "A Hard Day's Knight / I, Brobot," the first half of the episode centers around the stepbrothers' quest to create a medieval jousting tournament in their backyard. Phineas and Ferb enlist the help of their friends to build a jousting arena and create homemade armor and weaponry. Candace, as usual, tries to bust her brothers by taking pictures and videos of their project to show their mom. Meanwhile, Dr. Doofenshmirtz plans to use his newest invention, the Duplication-inator, to create an army of Norm-bots to do his bidding. The two plotlines intersect when Doofenshmirtz accidentally hits Phineas and Ferb's tournament with his Duplication-inator, causing an army of Norm-bots to enter the tournament and fight against the kids.

In the second half of the episode, Phineas and Ferb create a robot replica of themselves, named Brobot. The boys teach Brobot how to act like them and even put him in place of themselves at school and home. However, things start to go wrong when Brobot takes things too far in trying to mimic his creators, leading to hilarious chaos and misunderstandings.

As always, the episode features the show's signature musical numbers, including a jousting song and a catchy tune about Brobot's capabilities. The episode also highlights the relationships between the characters, with Candace's determination to bust her brothers, Perry the Platypus' efforts to stop Dr. Doofenshmirtz, and the bond between Phineas and Ferb and their robot creation.

Overall, "A Hard Day's Knight / I, Brobot" is a fun and whimsical episode of Phineas and Ferb that showcases the show's unique blend of science fiction, comedy, and music. It is a great addition to the first season of the beloved animated series.