My nephew Ryosuke was living at his aunt's house under the condition that he would have to move out when her husband returned from his long business trip. It seemed like a dream come true; being close to work and getting to live alone with his beautiful married aunt. However, he knew better than to act on his desires towards her. As usual, he stripped down to his underwear to relieve some of his pent-up lust while browsing through his collection. But fate had other plans when he accidentally crossed paths with his aunt. Instead of getting angry, she surprisingly invited him to join her...

叔父の長期出張が終わるまでという制限付きで叔母の家に居候している亮。勤務先からも近くその上、憧れの叔母と二人きりの生活ができるなんて夢のようだ。とはいえ叔母は既婚者。手を出してはいけない相手。本人にぶつけられない情欲を下着で解消していた亮はいつものように脱ぎ立てパンティを物色していくが運悪く叔母と鉢合わせてしまう。しかし怒られるどころか「一人で遊ぶなんていけない子ね」と逆に言い寄られて…。