Craig Tucker and Tweek Tweak have growing romantic feelings for each other, but neither of them want to admit it to each other. Both Craig and Tweek are skeptical about what the other would say about their feelings. But recently, Craig had started to notice that whenever he talked to Tweek, his heartbeat would get progressively faster, and the more Craig's feelings for Tweek grew, the more frequently his heart rate would elevate. Tweek soon noticed the same thing happened to him when he talked to Craig and hung out with him. Craig also began to notice that whenever his heart rate was higher than a certain bpm, his wristwatch would notify him. The notifications started getting more frequent as Craig's feelings for Tweek grew. Tweek has the same wristwatch as Craig, and Tweek's watch also notified him when his heartbeat got too fast. As the notifications from Tweek and Craig's wristwatches occurred more often, their friends started to notice as well. But when Tweek's feelings for Craig develop more, Tweek starts to worry about his constant fast heartbeat and begins to fear it's due to something bigger than just his love for Craig. Will Tweek and Craig give in to their emotions and confess their love to each other?