Michael investigates tyre tracks and a paint chip when the daughter of an old friend is injured in a hit-and-run incident.
Bruce Wayne manages to fall under the dangerous Lorelei-like spell of the Siren, so Batgirl and Robin must leap to his rescue to pull him out of the spell.
A TV-news crew complicates the officers' work; Ponch makes friends with a minimotorcycle rider.
Bill Hawks travels to a desert town to visit an old friend, an Indian who has a ranch there.
