In the bustling city, four people have completely different life trajectories. Su Wanning, a cool and reserved interior designer, has been fighting the pressure of life and work alone all year round, and is used to burying her emotions deep in her heart, until she meets the ascetic and taciturn top architect Lu Shiyan. He was silent and restrained, but left all his tenderness and preference to her, soothing her sensitivity and uneasiness in every detail, and the hidden heartbeat quietly grew in each and every time they worked together. The bright and free-spirited freelance blogger Wen Zhixia, who is enthusiastic, straightforward, transparent and magnanimous, accidentally meets the handsome and poisonous emergency doctor Shen Yu. The two started off as happy enemies, bantering and testing each other, and their straightforward preference broke all restraints. The four people came together by fate and formed a unique circle of friends, assisting each other and keeping each other's secrets in check. Some people are reserved and tolerant, and fall in love slowly over a long period of time; some people are passionate and straightforward, but quickly fall in love with each other day and night. They each bear the confusion and difficulties of adults, dismantle their defenses in love, and complete redemption in companionship. The world is noisy and the sea of people is vast. Su Wanning meets Lu Shiyan, and they feel lonely and have a home from now on; Wen Zhixia prefers Shen Yu, and there is a warm response from then on. This is the gentle love between two pairs of adults, the heartbeat hidden in the city's fireworks, and four sincere loves that go in both directions and stay together year after year.
