The episode begins and old Ted tells the kids that even though dating as a single guy in New York was pretty fun, Jeanette was the one who finally made him say, for real, "No more dating". Ted is telling his friends this while they sit on the sidewalk in front of his apartment building, which is strewn with his belongings some of which are set ablaze. Rewinding a bit, Ted explains to the group a bit earlier that Jeanette threw a beer bottle at his TV, but, as Ted tells the gang, "In her defense, she was aiming for the window". Marshall and Ted encourage him to get rid of Jeanette.
Ted wonders if they're really looking out for him, or trying to keep him single so they could maintain their "clubhouse". Ted explains that since he's the only single guy left in the group, Barney and Marshall come to him whenever they buy something they weren't allowed to keep in their own apartments like a classic Donkey Kong Jr. arcade game, a cotton candy machine, a Vespa, etc. Ted shares that Jeanette "is a big Marilyn Monroe fan”. Ted continues to say that they had a séance. Barney asks Ted if they were able to contact Marilyn in the spirit world. "No" Ted says, defiantly. "We talked to her cat" he adds. Ted sheepishly admits that he and Jeanette are taking her dog to an exorcist. Ted says he knows Jeanette is crazy, but he's just in it for the fun stuff now.
Ted says he'll break up with her in a public place just in case. He takes her to a hockey game and she screams at the referee, saying she'll kill him right there in front of all those people. Ted decides he'd better talk to Jeanette before the game starts. The next night, Barney and Marshall are playing video games at Ted's house. He has to step out, but implores them not to let Jeanette in if she stops by. They're distracted by the game. Ted leaves and Jeanette immediately knocks on the door. Marshall and Barney both answer the door and scream before slamming it shut. Lily and Robin are out when Lily has to chase down a bus because she left Marvin's binky on it. She tells Robin that if Marvin starts crying she should pick him up.
As soon as Lily leaves, Marvin starts crying. Robin picks up the whole stroller. Ted gets back and Marshall and Barney admit that Jeanette came by to get a book she left in Ted's room, so they let her go up and get it. Jeanette is smashing things up in Ted's room. She never left. She, instead, barricaded herself in Ted's room, is breaking things, and is "never coming out". She won't even have to leave the room to use the bathroom or eat because Ted ever-so-responsibly bought all kinds of emergency food rations and a bucket toilet after Hurricane Sandy hit New York. Lily comes back with Marvin's binky, which was on the bus floor. She decides she should probably throw it away.
Robin says there was nothing eventful in her short time alone with Marvin, but it is shown that four years later Robin confesses to Lily that she'd let a stranger pick him up because she was too nervous to do it herself. Lily says it's fine as long as there is no more to the story. Robin says there isn't, but the look on her face says otherwise. The guys are trying to coax Jeanette out of the room and Ted tells her he has called the cops. Then they hear a police radio announcing the call to the apartment. Jeanette answers it. She's a cop. Next Robin is seen confessing to Lily 12 years later that there was, indeed, more to the story.
After the nice stranger calmed Marvin down, she put Marvin back into the stroller and Robin distractedly let the stroller roll into the street. Lily forgives Robin for it and asks her to promise there's no more to that story. Robin claims that's it, but it still seems otherwise. The guys can't figure out why Jeanette can't just accept that she and Ted just broke up. Ted finally confesses, "it might be because we didn't actually break up". Ted recounts the story from the night before. He told Jeanette they needed to talk and Jeanette thought Ted was in love with Lily. She went on to scream at him that she never wanted to see him again. Ted thought he could just never contact her again, and hoped she'd take the hint and just leave him alone. It's now 14 years later. Lily demands to know what Robin did to Marvin.
Robin then recounts that it was really cold and the stranger kindly suggested they get out of the cold. Looking around to see what was open around there; they ended up at a strip club. "It was just topless" Robin says. "He saw yours all the time, then, anyway" she adds. Robin says there is now, really, no more to the story. Two more years later, Robin admits that she had to go to the ladies' room and left Marvin with the stranger in the strip club. Robin says there's definitely no more to the story now. But another year later, Robin changes one final detail. It wasn't a kindly older woman who was the stranger. It was Mike Tyson. "You waited 17 years to tell me that you met the greatest boxer of all time?" Lily says. "My son was rocked to sleep by Senator Mike Tyson" she exclaims.
Ted is preparing to go in and break up with Jeanette for real. Five minutes later, Ted is tossed down the stairs. Robin and Lily show up, having heard Ted screaming from three blocks away. Marshall concludes the reason Jeanette is acting this way is because of Ted. Ted then admits he's been sending mixed signals. After she yelled at him at the Barclays Center, they made out and got kicked out. He then admits that when he went into the room to confront Jeanette, they ended up hooking up after he saw her wearing his red boots. Lily subtly hands Marvin over to Robin as she gets up to go to the kitchen while Robin was talking.
Robin suddenly realizes she's holding Marvin. and it is "exhilarating". Lily tells Ted he needs to be with Jeanette right now because he, too, is a little insane right now. Later, it's 3 in the morning and Robin is still holding Marvin. She doesn't want to put him down. Lily goes to bed. Then, suddenly, Robin asks herself, "What's that smell?" before shouting for Lily to come help. The episode ends at this point.