Nuan Xi accidentally transmigrates into a strategy game, forced to approach He Yanting, the cold, arrogant Lord who possesses world-destroying power. Thinking she could return home simply by maximizing his affection level, she gradually becomes his sole partiality amidst bickering, probing, and heartbeat moments. Just as the strategy mission is about to be completed, the world rules suddenly collapse, and Nuan Xi's soul is on the verge of dissipating. To save her, He Yanting willingly lets her return to her original world, even if the two will completely forget each other. He makes a vow: no matter how many worlds he crosses, and whether he still remembers or not, he will find her once again.