He, the powerful economics god; she, the bright and lovely biology fan. In the country's leading Q University, what kind of sparks can the little fangirl Mimi and the academic tycoon Jiujiu create? Yu Ke and Zhang Xiaobei, their respective middle school roommates, were noisy and stumbling all the way. At this critical moment of life and death, can Yu possibly see his own heart clearly? When the ambiguity finally moves forward, is it really too late? Will the entangled youth of the four people blossom and bear fruit in the end or end in vain? Do you still remember that we clearly promised to hold hands and walk towards the end of the blue sea together?