The town is excited when Chef returns to town after world traveling with the “Super Adventure Club,” but the boys notice something is different about Chef. It seems that Chef’s new sense of adventure has gotten the better of him and the boys try to save him.
George discovers that Max has begun an online romance with a teenage girl from Chicago. When he assumes his son's identity to protect him from what he suspects is an internet predator, George comes face to face offline with Freddie.
When General Skarr tries to get rid of a weed in his otherwise perfect garden, he asks Grim to use his scythe to do the job. Billy drives a lawnmower and ruins the garden; also, the scythe's magic accidentally shoots Skarr, transforming him into a plant-like creature. Using his new plant powers, Skarr rebuilds his garden, and tries to exact revenge on Billy by throwing a party, and attacking him. Skarr gets mulched by a helicopter rotor, but he is reborn as a small weed.
When Mandy and Grim go to the warehouse store, Mandy notices that everything seems to be in order, lacking any presence of chaos. Hoss Delgado, spectral exterminator, arrives saying that everything has been that way since he started dating Eris, the goddess of chaos. Mandy assures Delgado he must break up with Eris to restore chaos, but fearing her temper, he is reluctant to do so. After failed attempts by Grim, Mandy, Billy, and Irwin to break their relationship, Delgado finally tells Eris the truth about he wanting to break up, and she complies by turning into a giant insect and devouring him.
Moz is a drug dealer and has very strange clientele who come and go from his flat.
Shirley defends a long-time client who doesn't want his Victorian erotica collection lost in his divorce, but she is shocked when Ivan is opposing council. Alan takes drastic steps to help Catherine's friend who is being taken advantage of in a nursing home. Meanwhile, Paul cuts back on his time at the firm when Fiona begins to take priority, causing worry among the other partners.
After Carolyn Pereira's body is dumped in an area frequented by prostitutes, Stabler and Tutuola soon realise she had far more money than a student on financial aid should have had, and learn that she was deeply involved in the worlds of online gambling and high stakes poker. Suspects include the Gloria Culhane, the roommate who ended up with the very expensive ring that Caroline stole from a star athlete, Roddy Franklin, the star athlete who had his ring taken by Caroline, and Adam Halder, Caroline's best friend from childhood who turned out to be her backup during her online gambling forays. Stabler makes a special plea for Halder, feeling like he and the young man have something in common because both were boys from the wrong side of the tracks dealing with rich kids who treated them like dirt.
When Andy stars playing chess with Ryan on a regular basis, Jim is convinced that he is losing his best friend.
Jonas attempts to rescue a group of American missionaries in hiding in Indonesia. However, he soon realizes the mission is going to take more manpower then he expected. At the base, Mac ends up being shot by Bob during a training exercise and Molly, Kim and Tiffy prepare to host a visiting senator.
As Vic prepares to help Lem get out of the country to begin a new life in Mexico; Kavanaugh and Aceveda attempt to capitalize on the situation by using this as means to try to take down the leader of the Strike Team. Dutch decides to file for a transfer. Meanwhile, Shane tries to cut off the investigation by taking extreme measures and Danny finally confronts the father of her child.
J.D. urges Cox and his fellow doctors to do special, unconventional things for their patients, but J.D. himself is not sure he can shave his head for a woman undergoing chemotherapy, after meeting a woman who loves his hair. Meanwhile,Turk and Carla attempt to eliminate all the stress in their lives, to better their chances of conceiving. Also, Elliot can't stop giving her new boyfriend Keith stupid gifts.
Cody runs for class president; Zack decides to run as well, but for the wrong reason. Mr. Moseby gets annoyed with one of the staff members.
Zack and Cody have to repair a wall that they damaged as punishment. London begins attending Maddie's private Catholic school due to her poor grades.
In order to afford a cruise, Doug convinces Carrie to cut her hair to sell to a wig maker, but regrets his idea after the deed is done.
New faces, same cracked aces. Antonio Esfandiari and Phil Hellmuth make their High Stakes Poker debut alongside Daniel Negreanu, Eli Elezra, Barry Greenstein, Shawn Sheikhan, Freddy Deeb, and Doyle Brunson.
After a group of wealthy women are robbed at a luxury day spa, evidence leads the CSIs to believe that this is a part of a much larger car chopping scam and each of these women are being targeted for a home robbery. Matters become worse when Horatio discovers that Marisol was also at the spa during robbery and he must now protect her when her life is threatened. Meanwhile, Ryan must deal with the fallout after he freezes during a shootout.
When Billy gets his kite stuck in a tree, he starts throwing objects at it to knock it down, including Mandy and a group of three boy scouts, but all objects get stuck too. Frustrated, Billy and Grim call a druid for help, who in turn trains them to become druids, so the three of them can perform a ritual. Meanwhile, inside the tree, Mandy battles a group of squirrels, and leads the scouts back to the ground. Since the druidic chants did not work against the tree, the druid goes ahead and uses a chainsaw to bring the tree down, but this gets him arrested.
When Billy and Irwin are yet again bullied by Sperg, they decide to play for the school's football team so they are not bullied anymore. During practice, Irwin shows a powerful arm and he becomes the starting quarterback, while Billy is relegated to being a punching bag. During their first game, Mandy directs the team into scoring their first ever touchdown, so Coach Kilgore gives her the job of captain cheerleader, taking it away from Mindy. With Irwin's arm and Mandy's cheerleading the team reaches the finals. Mindy tries different ways to get back at Mandy and recover her job, but she ends up affecting her own team, which eventually loses the game.