Season 15 opens with two back-to-back episodes, picking up the action with "2020: A Year in Review," in which the main characters reflect on the pandemic-imposed chaos of that year. As they do so, they realize they contributed far more to the ongoing havoc than they could have imagined. Then, in "The Gang Makes Lethal Weapon 7," the gang is shocked to discover their "unofficial" sequels to the "Lethal Weapon" movies have been pulled from their local library. Rob McElhenney, Kaitlin Olson, Glenn Howerton, Charlie Day and Danny DeVito star.