Season 3, Episode 7: The Counterfeit Presentment of Two Brothers
Robert vs Liam, for the love of Kathryn (though Robert doesn't know it) and the right to take the throne (though Cyrus is trying to stop that). Helena has tea (with a hot older gentleman), Eleanor plays croquet (with a hot younger gentleman). Plus there's some shenanigans with Cyrus and Sinnamon (and a "baby").
Shannon and Zach are both not hufflepuffs.