Scratch: OH NO. WHAT DID WE DO?!?! BF: BEEP BOOP BOP?!?! Scratch: KEEP SINGING BEFORE THE UNIVERSE ENDS. THIS IS OUR LAST CHANCE. BF: BEEKAY!
So the story line here. scratch broke his phone. but the portal is leading them to the end. if they keep singing, the world will be normal. The portal leads to "Another universe."
