Rival paleontologists Othniel Marsh and Edward Cope clash. The Big Bang's echo is discovered by Penzias & Wilson.
Eliza's effort to "follow through" on a work idea takes a toll on her relationship with Freddy; and Henry faces unexpected consequences when he rejects an admirer.
A punk wakes up from a multi-decade coma.
Stuart attempts to re-arrange a wedding seating plan to suit himself, while Jessica nervously waits to see if she gets a call-back for a network show.
When a substitute teacher destroys the volcano she was going to enter into the science fair, Louise vows to get even by turning her Edison-themed project into an instrument of vengeance and humiliation.moreless
As George treats a cockatoo who keeps eating chocolate, he and Doug meet the owner's granddaughter, who they both want to date. Meanwhile, Dorothey has a movie night, but only Yamamoto shows up. The two of them start hanging out together. Dorothey thinks that they have become good friends, but Yamamoto believes that they have become more. Also, when Angela and Rizzo's favorite TV program, "Law of the Jungle", is interupted, they call the cable guy, who Angela falls in love with.moreless
Michael awaits news of how Holly's ultimatum to A.J. demanding a proposal was received. Pam gets the office to share their resolutions.
Holly returns to fill in during Toby's jury duty, so Michael makes Pam throw a second office Christmas party to coincide with her return. Jim accepts Dwight's challenge to a snowball fight. Darryl anticipates Christmas with his daughter.moreless
Hearing of China's surging as an economic superpower convinces Michael that America desperately needs a new idea to keep pace. Dwight's cutbacks in the building lead to Pam suggesting it might be time for Dunder Mifflin to move. Darryl is annoyed with Andy's inane texts.moreless
Michael helps Ryan generate capital for his Wuphf service. Dwight hosts a Thanksgiving hay festival in the parking lot. Jim learns he's run up against a Sabre sales commision cap.
A cold sore leads to Michael contacting all his old girlfriends telling them he has herpes. Meanwhile, Andy hosts a sex ed forum for the staff.