Platonic (TV Miniseries)

Midnight. On a certain website, Sara types "If you are dying, please donate your heart to my daughter". In an Internet cafe. The young man taps slowly on the keyboard. When Sara next rechecks the website, she sees a reply. "I would like to give my heart". And thus, the mysterious young man enters single mother Sara's life. When she falls in love, it is time for the young man to die. Is that what fate has in store for Sara?