A YouTuber experiences an existential crisis in this musical comedy about creativity, online media, and balancing life.

Aspiring super-villain Dr. Horrible wants to join the Evil League of Evil and win the girl of his dreams, but his nemesis, Captain Hammer, stops him at every turn.

Dr. Horrible's Sing-Along Blog is a 42-minute tragicomic musical in three acts, each released separately. It tells the story of Dr. Horrible, an aspiring supervillain, Captain Hammer, his superhero nemesis, and Penny, their mutual love interest. The movie was written by writer/director Joss Whedon, his brothers Zack Whedon and Jed Whedon, and Jed's then fiancée, actress Maurissa Tancharoen. The writing team penned the musical during the WGA strike. The idea was to create something small and inexpensive, yet professionally done, in a way that would circumvent the issues that were being protested during the strike.