Single Bro

In a time when frozen humans are thawed, Dongwon, a twenty-nine-year-old baseball failure, welcomes his nine-year-old brother who has just woken up. He wants Hyungwon, who has the same face, to go down a different path, but nine-year-old Hyungwon's dream is still to be Hanyang's fourth batter. Dongwon wants to make his brother give up his dream without hurting him, and Hyungwon is just happy playing baseball with Dongwon. Can this dream-like relationship last?