Christy convinces herself that everything is fine even though her family is basically homeless. Surprisingly, Bonnie is the one who tries to bring her back to reality.
The team suspects Kate's niece and her friend were kidnapped by an online predator involved in sex trafficking and race to find them before they are hurt.
McGarrett helps his sister spy on her shady neighbors; a ride-share driver and his passenger are murdered; the team teases the youngest members when Junior escorts Tani to a wedding.
Randall and William take a road trip to Memphis, where Randall learns about his biological father's past.