Three love relationships resonate harmoniously, with three forms of sweetness. There is the ultimate pampering of the boss, the gentle protection of the tough guy, and the wise man's chess match. In the bustle and fireworks of the city, they use trust to resolve crises, use companionship to heal time, and let three heartbeat melodies interweave into the most touching love song. It turns out that the best love is when we meet by chance and run in both directions. It is the persistence of you understanding me and the purity of me protecting you. It is the friendship of three people and the love of two people staying together, which can bloom warmly in the years.