Crash

Namgang Police Station's Traffic Crime Investigation team cracks down on a second-hand car crime ring; insurance investigator Cha Yeon-ho mistakenly gets arrested with the criminals, hands over a suspicious envelope to TCI leader Min So-hee.

The TCI members arrest an insurance fraud suspect, but must release him due to a lack of evidence.

TCI set out to capture the ghost responsible for the Ganghui Three-Way Junction's traffic accidents; Yeonho discovers that these collisions usually happen on rainy days as due to of poor roads.

The team delves into a case involving a woman named Kim Minju who jumped out of a moving car; upon regaining consciousness, Minju tells Sohee and Yeonho that she jumped out to evade sexual assault by the driver, Yang Jaeyoung.

While investigating a hit-and-run case, TCI learns that it is tied to auto theft.

Yeonho gets audited and the car theft investigation goes back to square one.