Synopsis

The father discovered that Numbuh 3 was journeying to her ancestral home to rendezvous with the clandestine Japanese division of the Kids Next Door. Consequently, he dispatched his most capable agents, the Interesting Twins from Beneath the Mountain, to shadow Kuki and ascertain the location of the Japanese agents’ hidden base, with the intention of launching an assault. However, as the twins followed Numbuh 3, a confluence of unforeseen circumstances…