At the WNA Research Laboratory Branch situated in Eagle City, Komerica, scientists Burton, Berecca, and Ron have been relentlessly working to develop "Ninja-Gum". This elusive material strives to awaken the dormant Ninja DNA in individuals belonging to the lineage of revered mercenary warriors from forgotten times. After many attempts, their perseverance and dedication are finally rewarded, as they triumphantly produce Ninja-Gum on their 2,503rd endeavor. Delighted with their achievement, Burton and Berecca eagerly sample the gum, but are taken aback when a surprising occurrence takes place.