During their beachside summer camp, Chihaya and her friends cross paths with classmate Nami Minami, who quietly nurses an unspoken crush on Natsuki. As Nami wrestles with deepening inner shadows, she wanders into an old mansion where the Netherworld Tree stirs to life. Its strange pull draws her further into its influence, setting off unsettling changes that begin to ripple through the group’s relaxed getaway. The once-idyllic trip now carries an undercurrent of mystery and unease.
