When high schooler Mizuki Mochizuki falls for British rock star Adam Lang, her love goes unreciprocated due to Adam's lingering sorrow for his late girlfriend. Despite this, when Adam proposes a sudden getaway, Mizuki eagerly prepares to meet him. Tragically, a car accident halts her plans before reaching him. A month later, a Mizuki doppelganger resides in the same dwelling where she and Adam once shared precious moments. Meanwhile, young Hotaru Shiraishi encounters this amnesiac girl who identifies solely as 'Eve' and seeks reunion with Adam. Determined to assist Eve, Hotaru recruits her pals Sae, Tetsu, and Masaki to untangle the enigma—but curiously, they insist they cannot perceive Eve's presence.