Plot

Shawn and Gus help a prison guard locate his escaped inmates while on a ferry boat headed to the Channel Islands.

Open with Young Gus and Young Spencer practicing their three-legged race skills in an effort to win a BMX bike.

Gus has convinced Spencer to join him on a ferry bound for an island and some environmental clean-up. The guys immediately spot four prisoners on work release. They also run into several of Gus' environment-conscious friends, knows as D.C. and C.C. Spencer spots Gus' seasickness patch has fallen off and they head down to the bathroom.

The armed guard (Craig) and the prisoners are about to use the restroom, so Gus and Spencer have to find another. On their way back they hear noise coming from a closet. Inside they find Craig tied up. "This is a prison break," Spencer says.

Craig tells the guys he was jumped in the bathroom and his gun was taken. Craig doesn't think they should tell the other passengers in order to avoid a panic. Craig goes to see the captain while Spencer calls Henry, who insists they do nothing while he coordinates with the Coast Guard. The engine stops as the captain follows protocol. Craig says all the convicts have at least 20 years left on their sentences.

After stealing walkie talkies from D.C. and C.C., the plan is for Gus and Spencer to try and get a visual on the convicts and report back to Craig.

The guys see the prisoners working on untying the life boat. Craig tries to go to them but finds he's locked inside the cabin. Spencer runs toward the convicts and unties the life boat so they can't use it. The furious prisoners immediately take everybody on the ship hostage.

From a boat nearby Karen hears from lead convict Northcutt that they want save passage and assurances they won't be followed. Jules tell Karen that all four were model prisoners and received the work detail as reward for good behavior. This must have been a long-term plan.

Craig thinks they need to cause a distraction, so Spencer pulls off Gus' seasickness pads. Gus is carried out of the room.

A sniper boat joins the boat with Karen & Co.

Craig talks Spencer into going hard on the convicts. This results in his being kicked in the face by Northcutt and carried out of the room as well. After being carried Spencer notices all four convicts have identical triangular tattoos.

The prisoners use the hostages as a human shield to prevent the snipers having a clear shot. Over Henry's protestations, Lassie reminds Karen that they don't negotiate with hostage takers and she orders an assault.

As the sniper boat head towards the ferry, Northcutt and another prisoner, Sanders, order D.C. and C.C. into the cabin. Once they are inside we hear several shots. At this point the sniper team fires tear gas onto the ferry and the team moves in. After a few moments all four prisoners are taken into custody. When Spencer looks over he sees that Northcutt and Sanders have put their jumpsuits onto D.C. and C.C. Northcutt and Sanders were taken on stretchers to a medical boat and have taken control of the vessel.

Back at SBPD Spencer mentions the tattoos and the plan is to see if the men belonged to a gang of some sort and might be receiving outside help.

Craig has given his statement and tells Gus and Spencer that he's been fired. Lassie rips Craig for not doing his job. The guys agree to give him a cut of their fee if he helps find the prisoners.

Craig suggests they visit the mother of the now-deceased inmate with whom Northcutt started the gang. After initially lying, Mrs. Dunn admits that Northcutt stopped by, but only to pay his respects and visit her son's room. In the room Spencer notices a grate has recently been removed and a key was removed.

Lassie tells Karen that the men hired an immigrant smuggler and that in a few hours they will be hidden in a big rig. Lassie and Craig go toe-to-toe again.

Craig jumps online and finds that there was a $1 million never found after Dunn's last armed robbery. They assume Dunn told Northcutt where they money was hidden and that was why Northcutt got the key. A comment Craig makes about a woman reminds Spencer that on the boat he heard Sanders reference Northcutt having girlfriend on the outside.

Northcutt's girlfriend Patty admits that he came by and was talking about being a better father to her son. He also made a comment about wanting to go to church that night. This reminds Spencer of Mrs. Dunn's story about a now-boarded up church she and her son used to work at when he was young.

The three guys walk on Sanders and Northcutt pulling the cash out of the floor. They surprise the prisoners, but Craig ends up pulling out a gun, tying up the guys and taking the cash for himself.

Both the prisoners and Gus and Spencer have been duct tapped together. Gus and Spencer manage to get to their feet first and push a cabinet on top of the prisoners. They they proceed to run from the church, three-legged race style. Outside they spot Craig fleeing the scene in a car. Cutting through the woods (and falling down a hill) they manage to land on the road in front of Craig's car. He stops short of running them over but moves to get back into his car. Being out of work, he tells them, he needs the money to take care of his parents and start a business. They talk Craig into changing his mind and Craig manages to shoot the prisoners before they can sneak up on them.

At the station Craig apologizes to the guys. Karen tells Craig he should be able to get his job back and there is a $100,000 reward for returning the money.