Katie goes overboard in her efforts to help J.D. become a father. Meanwhile, after a brush with the law, Greg worries Taylor may be a political liability.

Gallo makes a split-second decision during a dangerous fire rescue leaving Casey steaming that his direct orders were not obeyed. Kidd feels a strain in her relationship with Severide. Brett and Mackey find themselves searching for answers following a series of suspicious calls.

Jimmy recaps the second day of Trump’s second impeachment trial before catching up with Dwayne Johnson, Young Rock’s Bradley Constant and Daniel Kaluuya and welcoming musical guest Chris Stapleton.

When King Alfred of Wessex hears about the arrival of the sons of Ragnar, with an army, he knows he must take drastic action. So as the Viking army makes camp and lies in wait, Alfred and his army abandon the Royal Villa and march to meet them.