Long after the fall of humanity, three robots embark on a sightseeing tour of a post-apocalyptic city.

When Ted attends his mother’s wedding, he is extremely disturbed by her overly affectionate relationship with her fiancé, which forces him to think about his own life and make an…

Ted and Robin discover that sex with each other solve their fights as roommates, which makes Barney very jealous and angry. Meanwhile, Marshall reveals that he’s too embarrassed to use…