The 118 races to rescue a little girl in a runaway hot air balloon and help with a city power outage caused by a hijacked tree-trimmer truck; Athena's investigation into the serial rapist case puts her life in jeopardy.
A 15-year-old who put a transgender teen in the hospital is tried as an adult.
The investigation of a Navy commander's murder leads the team to E.J. Barrett, and a second death prompts the team to protect E.J. as they hunt the killer.
Martin meets a homeless man who shares Jake's obsession with numbers; Teller (Danny Glover) visits Jake's board-and-care facility.
Lydia and Reuben search for a killer who cooked a man's body; John and Lucero have a day filled with strange calls; Ben and Sammy respond to a bank robbery.