Girl group Girls' Generation's Sunny revealed that, before starring in the popular entertainment program "Grandpas Over Flowers," she was in a slump.

Sunny revealed her broadcast slump for the first time ever during a recent filming of Mnet's "Beatles Code 3D."

Sunny said, "It was very difficult. Around the time when I didn't know how to smile or laugh for broadcast, I received the offer to star in 'Grandpas Over Flowers.'"

She continued, "After much contemplation, I decided to appear on the show. At one point it started to feel like I was on a trip, like I was there to play. It was the first time something like that happened. I was so excited that I came out of my slump through filming," and shared how she overcame her slump.

Besides Sunny, Girls' Generation's Taeyeon, Tiffany, Hyoyeon, and Lim Chang Jung starred as guests, and shared their witty stories. This episode was broadcast on the 18th.