Ann and Ben realizes they have a problem with their shared birthday date and both have different ways to solve that issue. Eventually, they settle on hosting a co-party.
As Ben attempts to research venues for their party, he discovers that nerds have gone mainstream. Who even IS he ?!
Ben decides he wants a THEME for the party: presidents! Ann resolutely says no.
Ben and Ann go to Party City to buy decorations and party-stuff. They debate the merits of paper and plastic. It's funnier than it sounds.
Ann has to clean for the party, so she uses the job to clear out her house of ex-boyfriend stuff. Ben comes clean about a big secret.
Ann and Ben get together to plan, fail to plan, and Ben takes a booty call that isn't really a booty call.
Ben finally convinces Ann to research costumes for the party and she reveals a rather disturbing character trait: genocidal maniacs are hot.
It's the night of the party !! But does anyone come?