Jin Won questions Sang Ha about why his passcode to his door is the same as his passcode. Sang Ha reveals that he went to high school with Jin Won.

Sang Ha invites Jin Won on his milk delivery run to train together.

Coach Bong takes the training team on an excursion to prepare for their competition. Sang Ha receives a threat from those whom he owes money to.

Jin Won thinks of a way to help Sang Ha with his financial troubles, while still protecting his pride.

Sang Ha's lenders pressure him into a challenging feat of finishing the marathon in order to repay his debt.

What do marathons and love have in common? They can't stop once they start.