The first season of "Rick and Morty" culminates with this episode, which is another great, though not perhaps top tier addition.
With Jerry (Chris Parnell) and Beth (Sarah Chalke) away on a Titanic themed vacation, both Rick (Justin Roiland) and Summer (Spencer Grammer) host a party back at the house. With Morty (Justin Roiland) desperately trying to keep both parties under control, for fear of reprisal from his parents, his brief attempt to make some time with Jessica results in the whole house being transported to an alternate dimension.
The B Story - of Jerry loving the idea of the Titanic themed party, and the concept that it malfunctions and the ship doesn't sink is perhaps better in conception that it is in practice. It could have done with another beat to explain how Beth finds Jerry at its conclusion in order to save the day. But it's fine, as it's just justification to get them away from the house. The main story, with the house party is better. It introduces us to a couple of characters who will recur, namely Squanch and Birdperson, voiced by Dan Harmon. There's a lot more funny character beats and a bit of heart, if Birdpersons translation of what "wub-a-lub-a-dub-dub" means is true.
It's a great season of one of the all-time best shows.