A bar fight lands Alan in jail; Charlie worries that Chelsea is interested in the lawyer who takes Alan's case.
When the Hollywood Reservoir dam breaks, Bobby and the 118 race into action to save passengers on a city bus that has crashed into a building several stories in the air; the team adjusts to life as first responders during the pandemic.
In the aftermath of the dam break, massive mudslides wreak havoc throughout Los Angeles; Athena fights to save herself and an agoraphobic woman after her house collapses; a group of pregnant women trapped in a submerged house.
A man accused of murder holds Patrick Jane and others at gunpoint in an effort to clear his name. Now, Jane must think quickly to defuse the hostage situation.
Med runs out of scrubs, forcing the staff to improvise. The life of Archer’s son is in danger. Crockett and Charles help a kidney transplant patient experiencing psychosis. Hannah and Will grow closer.