Norman Swarm has been Transformed was a play, which was played at The Stage in November 2009 and April 2011. Also, in the Club Penguin Times issue #212, it read: "Penguins will need to work with others to find all the secrets of this Stage... including a secret room!"
It's a big sized world. And you fit right in! To uncover the door to the Garden Gnome's secret room and find the bug-sized cure:
Work with a group of actors!
At least 1 of you must wear a bug costume!
Norman Swarm Has Been Transformed tells the story of Norman Swarm, who accidentally shrunk himself to bug size. During his exploration of the grassy area he shrunk himself in, he meets many bugs and other garden critters such as: Bonnie the Moth, Gladys the Spider, Bernard the Garden Gnome, Toni the Snail, and Fuzz the Bee. All the characters helped Norman Swarm to find a cure so he can revert to being "normal size".
To find the hidden room (Underground), you needed at least 5 penguins standing on the O's made of pebblesand. At least one penguin must be dressed as a bug. Then, in the Gnome Room, you would do the same thing you did in the Stage (stand on the O's), but this time, a treasure chest would open, and reveals a Pin. Everytime this play comes up to the Stage, a different pin is in the chest.