Do Over follows five characters over twenty four hours on the last day of the year. As the interrelated stories proceed, the connections between the lives of the five characters begin to reveal themselves and their stories unravel. By depicting five different characters at emotional crossroads, Do Over examines the struggle of overcoming our greatest fears; the unknown of what lies ahead in the future, the fading value of our existence in the present, and most of all, irreversible mistakes made in the past that may catch up to us.
Ah-Zhou, who is about to be honorably discharged from the military service, has a surreal dream. In the dream he sees the dead body of Shing-Shing Chen, a classmate in elementary school from years back. Is this dream implying that Shing-Shing Chen might have died? Soon afterwards, Ah-Zhou gets an unexpected five-day vacation and decides to look for Shing-Shing Chen. Nevertheless, he quickly learns that the special vacation is for him and another soon-to-be-discharged solider, Xiao-Gui, to go after a deserter, Kuen-He, who ran away with weapons two days ago. Both of them are worried about this assignment because they, the old birds, used to pick on Kuen-He, a spring chicken. And Kuen-He is now a deserter, armed and dangerous.
