After a former police chief is killed, details emerge indicating he might have been involved in criminal activity. Shawn and Gus get a glimpse of their futures as they team with two retired detectives to clear the old chief's name and solve his murder.
We flashback to 1990 SBPD. Herb Wilkins, the Chief of Police at the time, is giving then detective, Henry Spencer, a lecture on his mistake on a case. Herb ends up firing Henry off the case and replaces him with SBPD's star detective team, Peters and Boone.
We then flash forward to present day, where we immediately discover that the former Chief of Police, Herb Wilkins, has been murdered – execution style. Shawn and Gus show up on the scene and Henry explains the situation. Seconds later, Peters and Boone arrive on the scene. Shawn immediately doubts their ability – claiming they are too old to solve the case. Henry, however, vouches for them, saying they were the best of the best back in the day. While standing over the body of Herb, Shawn has a vision and is about to share it with the group, but Peters and Boone step in and say it first. They saw the same clue Shawn did. The gun found on Herb didn't belong to him. Peters and Boone show the group that the serial number on the gun had been filed off. Shawn and Gus are shocked to see that Peters and Boone are well on their way to beating them at their own game.
Back at SBPD, Peters and Boone have been brought on as consultants on the murder case. Shawn and Gus are there trying to make themselves useful; however, Peters and Boone want nothing to do with Shawn and Gus. They see them as measly "palm readers" with fake titles and no experience. Shawn and Gus decide to take matters into their own hands and find a lead of their own. They head to Herb's bait and tackle shop down by the docks. They question a worker – she lets them know that Herb was seeing a young girl with red hair – the same girl who worked at the shop across from Herb's called "Pacific Treasures" but hasn't been there in two days. At that point, Peters, Boone, Shawn and Gus are faced with each other, and are forced to share knowledge about the case. It is then that they get a call from Jules with the OK to search Herb's house.
Shawn and Gus arrive at Herb's house thinking they are the first to get there. But they soon realize that Peters and Boone got there long before them, and are already deep into their investigation. But Shawn gets a vision – a clue telling him that someone came to Herb's house before them looking for something Herb was hiding. Peters and Boone immediately defend Herb to Shawn and Gus, saying he would never get mixed up with anything shady. But Peters and Boone take the clue seriously, and Shawn and Gus overhear Peters and Boone determining that if Herb was hiding anything it would be in his locker.
They arrive at Herb's locker at the local public swimming pool. Shawn determines that Herb's locker number is #22 – not locker #9 as Peters and Boone thought it was. Shawn determines this after seeing a Shawn Vision of a bunch of lottery tickets in Herb's home with the #22 on every single one. They break open the locker, and to each of their surprise, find drugs in a black bag.