Ji Lingling, a top dating-sim player, obtains a beta-testing spot for the new game Infinite Heartbeat. Expecting a sweet romantic adventure, she unexpectedly falls straight into a game world corrupted by mysterious forces, where the exit is permanently sealed. To return to reality, she must survive one dangerous scenario after another and win over five eerie male leads, each burdened by five hundred years of obsession with reincarnation. The wolf lord Sun Chi, the fate deity Qiu Long, the fox-like spirit Hun San, the immortal physician Ning Lu, and the painter Meng Junzi each conceal secrets no one knows. The mastermind behind the scenes seeks to resurrect the version of her from a previous life, while supernatural crises close in at every turn. Through repeated life-and-death trials, Ji Lingling grows stronger, awakening the lost male leads as she uncovers the truth of reincarnation and fights against fate.