10-Second Cut With Killer Hand Skills: Ji-hoon, who is a loving husband, is always worried due to his premature ejaculation. He can only last for 10 seconds after insertion, so he just keeps caressing his wife for a long time, as he always feels afraid that he will finish quickly. At her wife's urging, he began consulting with a psychiatrist. When Tae-woo, another patient with a similar problem whom he met at the hospital, discovers his illness, the two become true friends who share each other's pain.