Star Trek The Animated Series S2 E3 The Practical Joker

After a Romulan attack, the USS Enterprise seeks refuge in a mysterious cloud, only to find its computer malfunctioning and playing elaborate practical jokes on the crew. As chaos ensues, Captain Kirk and his team must investigate the source of the pranks while struggling to regain control of the ship. With the Romulans closing in, the crew devises a clever plan to trick the computer into fixing itself, ultimately escaping the cloud and reflecting on their bizarre ordeal.