Breaking All the Rules (1985)

Three thieves stash a stolen gem inside a stuffed animal at an amusement park's midway. Meanwhile, Jack, a teenager working part-time during the summer, spends his days at the park with his best friend David and two girls. Their fun takes an unexpected turn when they become entangled in the robbers' plan to reclaim the hidden jewel. As the group navigates the chaos, they must outsmart the criminals while trying to enjoy their summer adventures.