Young Lin Chen runs a cozy guesthouse while waiting for the destined Lu Ruyan to arrive. The two set aside their reservations and pursue their relationship seriously, moving from awkward shyness to intimate companionship as they unlock countless sweet everyday moments. They leave their hometown together to study in the capital, where a brand-new university life awaits them. However, past entanglements with other people soon come knocking. In a youth filled with both love and challenges, they stay close to each other, keeping their hearts beating forever.