21-year-old college student Mai decides to get back at her cheating boyfriend by going on an overnight trip with a handsome male actor. Their destination: Karuizawa, blanketed in snow. They enjoy snowboarding and sledding at the ski resort, visit a winter waterfall, and stroll through dazzling illuminations, savoring their time alone together. At night, they head to a hotel and play a naughty game decided by cards. Initially shy, Mai gradually warms up and allows creampie sex. Late into the night, drawn to his cock, she begs for a second round. An intensely erotic night unfolds between the two.