C-137 Rick's and Morty's adventure in "The Ricklantis Mixup." All we know is that Morty hooked up and likely experienced intercourse with a mermaid and needs to go again. Several episodes showcase how Morty's misguided makes an attempt to do great conclusion up backfiring horribly. The closing theme is "Be" by Song Riders and is applied from the to start with by means of ninth episodes and then from the eleventh.