CHIN's

Claire and Phil decide to reprise their role-playing adventure from last year's Valentine's Day. Meanwhile, Jay's surprise plans for Gloria keeps getting interrupted, and a secret admirer comes between Cameron and Mitchell.

Claire feels slightly inadequate when her old friend, Valerie, visits and is nothing like Claire remembered. Meanwhile Jay has an unsettling locker room moment when he and Cameron go play racquetball, and Mitchell tries to help Gloria with some legal problems

Maddie fears for herself and her co-workers when the call center is taken hostage.

When Metro LA's 9-1-1 system is hit with a massive system-wide power outage, the call center must go old school in responding to emergencies. The first responders must deal with explosions in multiple homes and a difficult child birth. Meanwhile, Michael confronts Bobby about parenting his kids.

Lucifer angles to be his father's successor. Ella makes a painful confession. Chloe investigates a murder at an aquarium.

When Chloe and Lucifer's investigation into the murder of a diamond thief points to one of Ella's brothers as the main suspect, Ella is driven to prove her brother's innocence and recruits an unlikely ally. Meanwhile, Linda is upset when Charlotte comes to her for help and Detective Pierce hashes out his issues with Amenadiel.