Thru the Mirror

Mike and Sulley are back at Monsters University for a fun-filled weekend with their Oozma Kappa fraternity brothers. The gang is throwing their first party, but no one’s showing up. Luckily for them, Mike and Sulley have come up with a plan to make sure “Party Central” is the most epic party the school has ever seen.

When Day, a sunny fellow, encounters Night, a stranger of distinctly darker moods, sparks fly! Day and Night are frightened and suspicious of each other at first, and quickly get off on the wrong foot. But as they discover each other's unique qualities--and come to realize that each of them offers a different window onto the same world-the friendship helps both to gain a new perspective.

A Pixar short about a lost-and-found box and the unseen monster within.

This short film continues the adventures of the title character as he tries to retrieve his elusive acorn.