Ep 5. The Planetarium Collision

In The Big Bang Theory season 12 episode 5, titled "The Planetarium Collision," the gang faces a disaster when their beloved planetarium is set to close its doors for good. Sheldon, who is a regular at the planetarium, is particularly upset and decides to take matters into his own hands by organizing a benefit for the planetarium in order to raise the funds needed to keep it open.

Meanwhile, Howard and Bernadette are dealing with their own set of problems when their house is invaded by pigeons. As they try to figure out how to get rid of the birds, they are forced to stay with Raj at his apartment, which causes some tension between them.

Back at the benefit, Sheldon's plans hit a snag when his arch-nemesis, Barry Kripke, shows up and reveals that he has also organized a benefit for the planetarium on the same night. Forced to compete for attendees, Sheldon and Kripke engage in a hilarious battle of one-upmanship, each trying to outdo the other with their own unique brand of entertainment.

Things only get more complicated when Amy and Penny's rival, Leslie Winkle, also shows up to compete in the benefit. As the night wears on, tensions rise and the competition intensifies, leading to some surprising and unexpected results.

Despite all the chaos, Sheldon and his friends are able to pull off a successful benefit and raise enough money to save the planetarium from closing its doors for good. And even though the night didn't go exactly as planned, the gang learns the importance of working together and supporting each other in order to achieve their goals.

"The Planetarium Collision" is a hilarious and heartwarming episode that showcases the strengths of The Big Bang Theory's ensemble cast, delivering plenty of laughs and heartwarming moments along the way.