Detective Lucy Chen transfers to another station to escape her abusive ex-boyfriend. As she tries to keep her troubled past hidden, she makes new friendships and meets Tim Brattford. Amongst this, she struggles with the aftermath of self-harm and abuse.

Tim and Lucy met on vacation 5 years ago. They hooked up and met again in Lucy's Rookie year. Tim is already a cop and Isabel ditched him on vacation, so he went alone.