The reserved library administrator Xiao Nuo lives a calm and routine life, but she is broken into by the absent-minded designer Lu Ze with a bookshelf collision mix-up. Lu Ze reports in daily with milk tea, filling life with laughter through his goofy awkward moments. The two gradually develop feelings amidst trivial daily routines such as organizing blueprints and accompanying each other through overtime, guarding each other with gentleness and tolerance, and performing a humorous romance that has no ripples yet is full of warmth.