Reiko Kobayakawa is an ordinary, sexually frustrated, lonely housewife. She suspects her husband of cheating and sneaks into his laboratory, where she witnesses him cheating with his mistress. In the midst of the pandemonium, she is exposed to a large amount of gamma radiation and grows to a giant size! She becomes 100 times bigger and 100 times more sensitive! She masturbates on buildings and towers, making it rain with her juices! This is a full-fledged Giantess AV that makes full use of CG and dioramas!