Join in on a fun trip with Song Ji Hyo, model Jang Yoon Ju, Red Velvet’s Joy and WJSN’s Cheng Xiao! The four celebrities take an overnight trip together in the city in “Pajama Friends,” a new South Korean variety show directed by Kim Joo Hyung and Yong Seok In. Watch as they relieve stress and bond over shared experiences and small talk!