CHICAGO FIRE -- "Infection, Part I" Episode 805 -- Pictured: (l-r) Miranda Rae Mayo as Stella Kidd, Torrey DeVitto as Dr. Natalie Manning, LaRoyce Hawkins as Officer Kevin Atwater, Jesse Lee Soffer as Det. Jay Halstead, Kara Killmer as Sylvie Brett, Tracy Spiridakos as Det. Hailey Upton, Taylor Kinney as Lt. Kelly Selly Severide, Jesse Spencer as Matthew Casey, Marina Squerciati as Officer Kim Burgess -- (Photo by: Sandy Morris/NBC)

<p class="has-medium-font-size">The event that fans have been waiting for is almost here. NBC released the promotional trailer for their exciting #OneChicago crossover, which combines <em><a rel="noreferrer noopener" aria-label="Chicago Med (opens in a new tab)" href="https://wud.tpx.mybluehost.me/website_9bd75fcc/tag/chicago-med/" target="_blank"><strong>Chicago Med</strong></a></em><strong>, </strong><em><a rel="noreferrer noopener" aria-label="Chicago Fire (opens in a new tab)" href="https://wud.tpx.mybluehost.me/website_9bd75fcc/tag/chicago-fire/" target="_blank"><strong>Chicago Fire</strong></a></em><strong>, and </strong><em><a rel="noreferrer noopener" aria-label="Chicago PD (opens in a new tab)" href="https://wud.tpx.mybluehost.me/website_9bd75fcc/tag/chicago-pd/" target="_blank"><strong>Chicago PD</strong></a></em><strong> into one 3-hour story. </strong>The 2019<strong> </strong>crossover promises to deliver heart-pounding drama and the classic teamwork between Firehouse 51, Med, and the 21st district that fans have come to know and love. </p>



<h2 class="wp-block-heading">First, what makes the crossover so special? </h2>



<p class="has-medium-font-size">If you&#8217;re new to the <em>One Chicago</em> world, or aren&#8217;t familiar with the TV term &#8220;crossover,&#8221; allow us to help you understand the draw of such an event. In terms of television, the lure of a crossover comes from bringing multiple shows (either within the same genre, network, or &#8220;universe&#8221;) together. By doing so, characters from across each show are brought into each other&#8217;s worlds or storylines. These are fun for fans to see, as their favorite characters may interact in ways they wouldn&#8217;t have been able to otherwise. </p>



<p class="has-medium-font-size">Dick Wolf — the <em>Chicago</em> franchise creator — has been doing these crossovers since 2014, when <em>Chicago Fire</em> and <em>Chicago PD </em>came together to solve an arson-murder mystery. When <em>Chicago Med</em> came aboard in 2015, it gave space for a 3-way crossover, which was something that hadn&#8217;t been done on NBC yet. </p>



<figure class="wp-block-image"><img src="https://wud.tpx.mybluehost.me/website_9bd75fcc/wp-content/uploads/2019/10/One-Chicago-Key-Art-768x1024.jpg" alt="One Chicago Key Art – Med, Fire, &; PD" class="wp-image-46677"/><figcaption><em>Pictured: &#8220;One Chicago&#8221; Poster&#8211; (Photo by: NBCUniversal).</em></figcaption></figure>



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<h2 class="wp-block-heading">What is this year&#8217;s #OneChicago crossover about?</h2>



<p class="has-medium-font-size">This year&#8217;s &#8216;One Chicago&#8217; crossover revolves around an infectious disease that causes chaos in the Windy City. <em>Chicago Fire</em> co-creator Derek Haas wrote all 3 episodes and developed the story with Dick Wolf. This year&#8217;s plot is more feasible in that it truly intertwines the shows, as opposed to year&#8217;s past where only portions of storylines carried over. According to <a href="https://tvline.com/2019/09/02/chicago-fire-season-8-episode-4-med-pd-crossover-spoilers/" target="_blank" rel="noreferrer noopener" aria-label=" (opens in a new tab)">TVLine</a>, Haas was inspired by disaster films like <em>The Poseidon Adventure</em> and <em>Independence Day</em>, but not to worry: it won&#8217;t read like a SyFy movie; it&#8217;ll still feature the uniqueness of the One Chicago universe. </p>



<p class="has-medium-font-size">As for how all 3 shows will become entangled in the mess, that&#8217;s for the trailer to uncover. In the promo, it starts off with some members of <em>Chicago Med</em>, <em>Chicago Fire</em>, and <em>Chicago PD</em> enjoying a rare day off at a Chicago Bears football game. Unfortunately, things don&#8217;t say sane for long, as a mysterious illness overcomes some attendees, causing everyone&#8217;s favorite doctors and paramedics to spring into action. </p>



<p class="has-medium-font-size">From there, it&#8217;s up to the rest of <em>Chicago Med</em> to discover what exactly has caused this outbreak, and how deadly it could be for the city. <em>Chicago PD </em>and <em>Fire </em>come into play as the investigation turns to arson when the person, or persons responsible try to cover up evidence by burning down a chemical lab. </p>



<h2 class="wp-block-heading">Any other details? </h2>



<p class="has-medium-font-size">According to Haas&#8217; Twitter, the casts were <em>still</em> filming scenes for the crossover event as late as Sunday, October 6! Yes, you read that right: they apparently had re-shoots for <em>Chicago Med</em>&#8216;s portion of the crossover a mere <em>10 days</em> before the actual episodes are scheduled to air. Crazy, right? </p>



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<p class="has-medium-font-size">Filming for the crossover began in late August (can you imagine wearing fall clothes in all that heat?), and took place all over Chicago. Some locations include: the former Motorola Solutions campus in Schaumburg, Irving Park, as well as the financial district near the Chicago Trade Center. </p>



<p class="has-medium-font-size">One of Chicago&#8217;s own may be in danger as she faces quarantine after being exposed to blood from one of the infected victims. The promo shows a concerned Dr. Will Halstead (Nick Gehlfuss) looking over Detective Hailey Upton (Tracy Spiridakos), as she said the girl collapsed on her during their rescue. </p>



<p class="has-medium-font-size">The trailer also shows firefighters being hosed down, fellow hospital staff trying to calm victims down, and the CDC (Center for Disease Control) being called in just as Dr. Halstead claims that this is &#8220;an act of terrorism.&#8221; The perpetrator(s) is (are) also keen on having caused such a mass panic that the event becomes apocalyptic for the city of Chicago. <strong>See for yourself in the full trailer:</strong></p>



<figure class="wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
<amp-youtube data-videoid="EFZf7GFe1Bo" layout="responsive" width="1000" height="563"></amp-youtube>
</div><figcaption>One Chicago crossover trailer&#8230;or a thriller movie? You decide.</figcaption></figure>



<p class="has-medium-font-size">We&#8217;ve saved the best for last, as we have photos from the &#8220;Infection&#8221; crossover event, featuring the casts of <em>Chicago Med</em>, <em>Chicago Fire</em>, and <em>Chicago PD</em>. Take a look at scenes from &#8220;Infection: Part I,&#8221; &#8220;Part II&#8221;, and &#8220;Part III&#8221; in our photo gallery below: </p>





<p class="has-medium-font-size">The #OneChicago crossover event airs <strong>Wednesday October 16</strong>, starting at 8 PM EST with <em>Chicago Fire</em>; <em>Chicago Med</em> airing at 9, and ending with <em>Chicago PD</em> at 10. </p>



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<div class="saboxplugin-wrap" itemtype="http://schema.org/Person" itemscope itemprop="author"><div class="saboxplugin-tab"><div class="saboxplugin-gravatar"><img alt='Kari' src='https://secure.gravatar.com/avatar/dc123c9a3d7e4ec8ab5ae2bc43ec3c76760ee3993ed05afc6ffdbd1ed8f7ae25?s=100&#038;d=mm&#038;r=g' srcset='https://secure.gravatar.com/avatar/dc123c9a3d7e4ec8ab5ae2bc43ec3c76760ee3993ed05afc6ffdbd1ed8f7ae25?s=200&#038;d=mm&#038;r=g 2x' class='avatar avatar-100 photo' height='100' width='100' itemprop="image"/></div><div class="saboxplugin-authorname"><a href="https://feelingthevibe.com/author/kari/" class="vcard author" rel="author"><span class="fn">Kari</span></a></div><div class="saboxplugin-desc"><div itemprop="description"><p>Kari Highman is a Beauty and Fashion Blogger at Feeling the Vibe Magazine. Otterbein Alum (2017) &#8211; English &; Psychology. Always learning &; creating. Avid fan of mid 2000&#8217;s TV &; pop music. Comments or tips, email kari@feelingthevibe.com</p>
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