In episode 11 of MBC's Friday-Saturday drama "In Your Bright Season," Song Ha-ran (played by Lee Sung-kyung) learns the entire truth between Sun Woo-chan (Chae Jong-hyeop) and Kang Hyuk-chan (Kwon Do-hyung), leading to a great shock.

Sun Woo-chan has been revisiting the incident he experienced seven years ago and the memories of that day, preparing to document the past and reveal the truth. However, Song Ha-ran accidentally comes across his records first and discovers that Sun Woo-chan has known her for a long time and has been hiding his relationship with his ex-lover Kang Hyuk-chan. This seriously shakes the trust between the two.

After learning the truth surrounding Sun Woo-chan, Song Ha-ran is engulfed in feelings of betrayal and confusion. Sun Woo-chan also tries to convey his true feelings, but his condition worsens due to increasingly severe hallucinations and memory distortions. While searching for Song Ha-ran's whereabouts, Sun Woo-chan makes a dangerous choice.

Kim Na-na (played by Lee Mi-sook) feels anxious before her surgery and senses a change in Song Ha-ran's relationship with Sun Woo-chan upon seeing Song Ha-ran's haggard appearance. Song Ha-ran hides her emotions to avoid worrying her grandmother, and Kim Na-na reveals her complex feelings as she watches over her granddaughter. Park Man-jae (Kang Seok-woo) stays by Kim Na-na's side, offering support.

As Kim Na-na goes into surgery, the family hopes for a successful operation. Episode 11 of "In Your Bright Season" will air on the 28th at 9:50 PM.