When similar car accidents uncover the fact that someone may be targeting innocent people, a determined Dawson takes matters into her own hands to help push things along. Severide does everything he can to make Anna feel welcome in her new Chicago surroundings. Herrmann, Kidd and Dawson decide to have Molly's included as a stop in this year's pub crawl, despite strong concerns from Otis, who may have his own reasons for standing alone. Meanwhile, Casey tends to his Alderman's duties when a persistent constituent asks for his help in resolving an issue.