Slappy and the Stinkers

Five second-graders skip class and begin causing chaotic pranks on the grounds of Dartmoor Academy. They steal Mr. Brinway’s desk chair and secretly rig a leaf blower to it, hoping the chair will fly. The plan spirals out of control when the contraption lifts off and leaves Witz sitting aboard, setting off a near-disaster.

The improvised flying chair heads toward Mr. Brinway’s new convertible but runs out of gas before it can cause real harm. In the chaos, Roy accidentally damages the car’s side door with his lawn mower’s edging blade. The incident escalates tension and leads to a stern warning from Mr. Brinway.

Mr. Brinway makes it clear that any further trouble will get the Stinkers expelled from school. The threat hovers over Sonny and his friends as they continue to scheme around the grounds. They press on with misadventures while trying to stay one step ahead of punishment.

During an aquarium field trip, the Stinkers spot a sea lion named Slappy and decide to free him from captivity. They smuggle Slappy back onto the school bus and hide him in Mr. Brinway’s hot tub, celebrating the success with a private party. The stunt foreshadows bigger trouble to come.

To avoid drawing attention, the Stinkers move Slappy to Witz’s house. Roy mistakes the sea lion for a giant gopher and attempts to eliminate him, escalating the danger. The group doubles down on keeping Slappy safe while dodging adults.

The Stinkers take Slappy to the beach with the aim of releasing him, but Slappy refuses to leave because a nearby orca is present. In a moment of resolve, Sonny decides to return Slappy to the aquarium rather than letting him roam free.

Roy’s attempt to dispose of Slappy goes awry and ruins festival attractions. The mishap strengthens the perception that the Stinkers are behind the trouble, and Mr. Brinway expels them as a consequence. The group’s reputations hang in the balance as they scramble for a solution.

Animal broker Anthony Boccoli formulates a plan to steal Slappy for a Bulgarian circus, but his initial attempts fail. The Stinkers soon discover Slappy has been kidnapped and set out on a rescue mission. Tension rises as the clock ticks toward a confrontation.

The kids locate Boccoli’s hideout and confront him. They disable the kidnapper using water, scatter sawdust on his body, and blast him with Roy’s gopher bomb gun before freeing Slappy. Slappy is rescued and ready to return home.

Mr. Brinway and the class go on a hiking field trip to look at birds, but the Stinkers crash the scene and end up entangled in the getaway. Brinway becomes part of the adventure as they seek safety amid the pursuit.

The group is chased toward a log flume as Boccoli’s pursuit intensifies. Boccoli tries to drown the group by turning on the flume, creating a dangerous splash of water and debris. The escape hinges on quick thinking and teamwork.

A beaver’s nest blocks the water, stopping Boccoli’s plan just long enough for the group to regroup. After the nest is removed, a beaver bites Boccoli and sends a wave of water splashing over him, sending him tumbling off the ride. Slappy, the Stinkers, and Mr. Brinway safely reach the lake.

Slappy is returned to the aquarium, and Mr. Brinway withdraws the Stinkers’ expulsion. The students are celebrated as heroes for their sea lion rescue and the thwarting of Boccoli’s plan. The misfit crew ends the adventure on a high note, having saved the day.