After being taken hostage by a bank robber, Mac wakes up in the getaway car submerged in water, with a dead body in the passenger seat and no real memory of what happened. Evidence at the scene helps fill in the blanks and reveals the dead body in the car was "Joe's" partner, and "Joe" killed him while trying to find out where he hid the money from the bank. Knowing "Joe" is not going to leave without his money, the CSIs race against the clock to find him before he gets his cash and flees the country forever.