The loss of control when biting an earlobe on the bus, the sudden disappearance of hospital gowns late at night, the game between ex-girlfriends in the name of "getting back together"... 22-Year-old Zheng Haoran guards his girlfriend Kobayashi Hanana who suffers from mental illness, struggling between daily tenderness and hidden scars. When the "forever" tattoo fades and the note "I'm leaving" quietly appears, will this protection in the name of love redeem each other or drag each other into a deeper abyss? See how the uncontrolled heartbeat and the struggle to wake up weave the most heart-wrenching survival fable under the moonlight of the mental hospital.