After being shunned by the humans, Festro steals the sun from them so the Bros can have a rockin' spring break at Fort Awesome. However, older people who rely on the sun invade Fort Awesome. Festro swallows the sun to keep it from them and crawls to the surface with the bros. Gweelok then makes him spit it out. Realizing what has happened, the humans are very pleased with the bros for returning the sun and finally accept them as humans. That is until all the older people who wanted the sun started raining on the city.
The episode starts with the Sun shining and there are some humans at The Beach, enjoying their spring break (despite that these humans are very disturbing and hideous than the Disgustoids) until when Festro comes out of an sewer hole and says he smells sunshine
During the episode, a flashback of Festro as a young child was shown. Festro's Mom took him to the beach and he was treated badly by The Humans. Festro acts the way he does in this episode because of the mixture of neglect and mockery he got as a little disgustoid from the treatment he received from the humans.