A local agricultural university, biology department dormitory. A husband who was both a researcher and the dorm supervisor went missing, so his wife Riko came to this dormitory to search for him. Riko was allowed to work as the dorm mother in place of her husband, but this dormitory was 【for single men only】【no women allowed】！！Moreover, experiments were being conducted with the 'lust liquid' made from the semen accumulated by single men, and Riko, who broke the rule against women, was forced to drink it and was defiled by the real semen of the dorm residents…
