Carl fumes to Harriette about his regret in not accepting a promotion five years ago that would have transferred him to Washington D.C. While boarding a train to travel to the nation's capital for a seminar, luggage boy Urkel accidentally stows away. Chaos ensues when he's forced to share a room with Steve for the night in his room.
Meanwhile, Laura is very suspicious about Maxine's new boyfriend D'Andre, especially after he asks her to deliver a package for him. She immediately warns her friend to cut ties with him now becvause he's up to no good. Maxine refuses to believe her and demands that she stays out of her life. Minutes later, Eddie comes home as a newly, full-fledge police officer and Laura tells him about her suspicions on D'Andre. She's concerned that Maxine will make a horrible mistake and she asks him to keep an eye on her boyfriend. Eddie agrees on the grounds that she has to wash and dry his clothes.
In Downtown Chicago, Laura's suspicions about D'Andre and his intent of was confirmed, he was trafficing drugs with the intent of selling it illegally. Eddie, Willie and a fellow officer arrests him and another drug dealer for drug charges. A hurt Maxine is crying in Eddie's arms, telling him about what her boyfriend wanted her to really do and how much she regretted in not heeding Laura warning to stay away from him. Eddie reassures her that she didn't know what was going on. She gets into the police car with him and Willie to make a statement against D'Andre. During that time, Maxine realizes that she has to apologize to Laura for trying to watch out for her safety and she showed how ungrateful she was towards her by telling her butt out of her life.
On the train, the usual antics results, as Carl yells at Urkel and calls him a butthead. However, an insulted Steve sets him straight for calling him that because it was his nickname in preschool and he was hurt by that. Later on, Carl confides in Urkel that five years ago, he regretted in not taking the promotion that got his fellow officer and rival, Charlie Carnelli where he was today. Steve helps him to realize that "the road not taken" was perhaps the right decision after all. If he had taken the promotion years ago and moved to Washington D.C., he would've regretted it in the long hall since he wasn't good with politics. He was a man of action who is respected by the community for his efforts to keep crime down in Chicago. He was captain of the Chicago PD at a very young age commanding and respecting his fellow officers. His family, friends and fellow officers look up to him in respect. In turn, Carl realizes that Steve was right all along and that "the road not taken" was probably the best decsion that he had made.