A freak accident sends his partner, Fu Youzhi, back to the age of eight. Siye, who suffers from severe touch aversion, is forced to become his only “human tranquilizer.” Hugs, hand-holding, sharing a bed… To his shock, Siye slowly finds himself healing—not just physically, but emotionally—through these intimate moments with the one person he once despised. But behind this “memory loss,” what hidden secret lies waiting to be uncovered?