To the Summer That Returned

My ex-boyfriend showed up as the new hire at work."I think it'd be nice if you treated me kindlylike you used to."Lee Danbi, a 7-year corporate worker barely holding it together,and Han Yeoreum, the ex who keeps shaking up her life again.Why did Han Yeoreum come back?Will that summerthat passionate, unforgettable summercome back to us once more?