"Everything goes according to plan, then someone throws a kitchen sink at me."

When an military engineer in the military-industrial complex is suddenly transported into the body of Helen, the viscount's daughter, she finds herself with the extraordinary ability to craft and manufacture any item she desires using just blueprints. With her newfound wealth and abilities, Helen sets out to achieve her dream of reproducing modern military armaments.

However, as Helen begins to enjoy her leisurely new life, everything takes a sudden turn for the worse. The country of Alduria is on the brink of civil war, and Helen's own uncle has marked her and her sister for death. Forced to flee for their lives, Helen must quickly learn to master her ability in order to protect herself and her sister.

As Helen embarks on a journey to learn more about materialmancing, she is aided by fellow reincarnated transmigrated individuals and technic magicians. Together, they face both personal and global challenges as Helen transforms from crafting a simple M4 assault rifle to building a powerful LGM-114 intercontinental ballistic missile. Follow Helen's incredible journey of determination and friendship in this thrilling tale.