Miley worries that Oliver's obsession with Hannah Montana has gone too far and decides to do something drastic to cure him of his crush. Exploiting the knowledge that he has a strong aversion to people who chomp their gum, she puts on her Hannah disguise and Lilly arranges a coincidental beachfront meeting with Oliver. When Oliver discovers that not only does Hannah Montana chomp her gum, but she is not above putting it back in her mouth after it has fallen in the sand, he is still not cured of his obsession so Miley finally resorts to revealing her true identity.
After learning about Richard's drinking problem, Derek confronts him; Izzie returns, hoping to reconcile with Alex; tensions run high for Teddy, Cristina and Owen in the aftermath of Cristina's startling confession.
Mr. Schuester's high school nemesis (Neil Patrick Harris) causes trouble for the glee club; Rachel struggles with a personal issue; Artie goes on an adventure in his dreams.
Kelly discovers that Lt. John Lamarr is smarter than he lets on. So, she pushes Ed to consider him for a key leadership position on the ship after The Orville gets damaged by a mysterious spatial anomaly causing harrowing effects to all things living.
Miley accuses Oliver of being shallow for not dating girls with imperfections and is left to practice what she's preached after accepting a date with a guy who turns out to be short.
