Jeong Woo-seong's son Choi Tae-joon had a check-up for a liver transplant.
On the fourth episode of JTBC drama "Padam Padam... The Sound of His and Her Heartbeats", Kim Gook-soo (Kim Beom) went to find Kang-chil's (Jeong Woo-seong) son as Kang-chil had liver cancer.
Trying to save Kang-chil in any way, Gook-soo found Jeong (Choi Tae-joon). He couldn't ask his old mother (Na Moon-hee) and he th