Seven days before the summer vacation, finals are approaching. Li-Hong is waiting for the long-overdue contract renewal, which he desperately needs to pay for his sickly grandma's hefty medical bills. Amid anxious anticipation, complications unravel...

His estranged brother got entangled in a felony assault. His rival for his potential contract, also his love interest confessed her love to him. His favorite student, falsely accused of an attack, asks him to defend his innocence. His boss, the principal, forces even more unreasonable tasks on him, rendering his workload impossible …

Save his brother or save his own skin? Confess to Lu or reject her love? Stand up for his student or follow the crowd? Be the principal's lapdog or bark some sense to him? Within seven days, Li-Hong has to make his decisions. Like his students, Li-Hong is to be put to test...