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The members act out scenes of distraction and amazement at their own changing feelings. They spend the day together in various colorful locations, from green outdoor spaces to stylized indoor sets, collectively trying to understand the "throbbing" sensation in their hearts that they’ve only ever heard about in stories.

As they begin to experience the flutters of first love, the world around them becomes increasingly surreal. Ordinary moments are interrupted by playful post-production effects—vibrant green fields, popping candy visuals, and exploding balloons—signifying their hearts "swelling" with emotion. csr_pop_pop_official_mv

The energy peaks during the high-tempo chorus where the choreography and visuals synchronize to mimic a "mini explosion of energy". The story concludes with the members embracing these new feelings, realizing that their "first love" has finally arrived. The members act out scenes of distraction and

The video opens in a bright, vintage-style classroom and school grounds. The members are shown as a close-knit "class of 2005," sharing secrets and passing notes, which captures a sense of youthful nostalgia. The video opens in a bright, vintage-style classroom

In the official music video for by CSR (Cheotsarang), the story centers on the group's signature theme of "First Love" ( Cheotsarangcap C h e o t s a r a n g

The narrative follows the seven members as they navigate the confusing yet exciting physical sensations of a first crush, metaphorically represented by things that "pop"—like popcorn, bubbles, and fireworks. The Storyline of "Pop? Pop!"