Please note this is a region B Blu-ray & will require a region B or region free Blu-ray player in order to play Leonard & Sheldon are brilliant physicists--geniuses in the laboratory but socially challenged everywhere else Enter their beautiful street-smart neighbor Penny who aims to teach them a thing or two about life Despite their on-again off-again relationship in the past Leonard believes he&s found true love with Penny & they have finally gotten engaged Even Sheldon has found a female companion entering into a " Relationship Agreement" with neurobiologist Amy Farrah Fowler In their free time Leonard & Sheldon continue to enjoy frequent trips to the comic book store & fantasy role-playing games with their ever-expanding universe of friends including fellow scientists Koothrappali Wolowitz & Wolowitz&s adorable microbiologist wife Bernadette