Oscar starts out the episode wondering if Angela has figured out the truth about his affair with the Senator. He's soon satisfied that she hasn't, which she totally has. Her response is to go to Dwight, who thinks she just wants someone spied on. But when he introduces her to his weird friend Trevor, it turns out she's got murder on her mind. For once Dwight is the voice of reason, and manages to talk them down to a simple kneecapping instead.
Meanwhile, both Halperts are finally taking on projects they've been putting off. For Pam, it's that mural in the warehouse that Nellie commissioned, although even today she's getting a slow start. For Jim, it's asking David Wallace if he can work part time so he can be in Philadelphia with his new company more. The only way he can sell that, though, is by getting Phyllis and Stanley to agree to cover for him when he's gone. Which they do, but only after messing with him and making him buy them an expensive lunch at a fancy restaurant.
Pete's taking his job in customer relations to the next level by building a tower out of complaint cards. His project soon attracts the attention and support of everyone not currently engaged in another subplot (and Pam), but the only way the tower will reach to the ceiling is if someone comes up with another complaint. Pam takes it on, and in purposely screwing up she finds the courage to face possibly screwing up on her mural, which she finally begins.
Dwight soon figures out that Angela's target is Oscar, and after some silly chasing around the building like a bad farce, Angela confronts Oscar, who escapes with no more injury than an Angela-sized toeprint on his shin. Dwight comforts Angela, and then together they seek some answers from Toby. About gayness. Which, clearly, they desperately need.
Oscar's nervously waiting for Angela to show up for work the day after she may or may not have figured out about his affair with her husband. "If she's cold and awkward and cruel to me, then great, it's business as usual," he talking-heads. When she walks in wearing her usual scowl, Oscar's in so much panic he can barely speak, until she just asks him if the thermostat's acting up. In a hyper-relieved TH, Oscar says she clearly has no clue. "I guess the universe rewards true love." Of course Oscar doesn't know about the daggers Angela's staring through the window behind him.
Truncated credits, but the usual shot of Andy knocking Old Salty off his desk has been replaced by one of Jim kissing Pam. And not knocking her over at all. Does this mean Andy's never coming back? And is everyone else as okay with that as I am?
When the Halperts show up for work, she's wearing painting clothes so she can finally start doing the mural in the warehouse after what has apparently been some procrastination. Jim offers to come help her because he's putting off something of his own: asking David Wallace if he can start working part-time, because without him the new sports marketing company is starting to do stupid shit like name itself "Athlead." Fortunately, Jim has a great opening line: "Hey, David, how'd you like a guy that's not here as much, gets paid the same amount of money, and has bigger fish to fry in Philadelphia?"
Pete has a stack of customer complaint cards, which he's supposed to fill out every time he enters a complaint into the computer. It doesn't make any more sense to Pete than it does to us, and Andy's only response to his question was a direct order to "Chillax." So he's responding by building a house of completed cards. "Fight the power," he self-mocks.
In the break room, Angela quietly but urgently tells Dwight to meet her in the old place. "Five minutes. I need you." Cut to the warehouse, where Angela slides open the door to the storage closet to find him buck naked. When she tells him to get dressed, Dwight pretends he's just working out, which the pixels over his crotch actually are. Angela says the kind of help she needs from Dwight is outside the law, but he tells her he's done with all that: "I'm not in your panties, I don't go vigilante." But when Angela says her marriage is in danger, Dwight texts a former volunteer sheriff and gets a text right back. Another one?
Jim's call to Wallace isn't going so well, until he says that Phyllis and Stanley have agreed to cover for him when he's gone. Cut to Jim in the break room trying to convince them to actually do so, and calling on their friendship doesn't seem to be cutting much ice. "Let me take you to lunch and I'll make my case," he says, which seems to get their attention.