Star vs. the Forces of Evil - Season 2 Episode 32 -

Star is called to solve a problem in Miss Skullnick's math class, but she refuses to do it. She tries to cast some magic to get out of it but ends up in a time loop. However with each iteration, the scenario is slightly different. Star goes to Father Time's dimension, but Father Time is too busy to help her, and she gets advice from Omnitraxus Prime, who is in charge of space-time. Star must solve the problem or her world will fall apart.