Mei is not hired by any company after her graduation from a University. Introduced by her best friend Sari, Mei applies to be a home private tutor far away from her home. Every day, Mei needs to take a crowded train to her student’s home, but is always being indecent assault by an unknown “Train Man”. Later, Mei even discovers that the guy who sexually assaults her is actually her student. What will happen to the relationship between the two? Besides, this is also a revenge for Sari…