It All Started When...

Naruto x Ben 10 crossover
Eventual Narusaku pairing

For years Ben Tennyson was the wielder of the Omnitrix, but after an abrupt retirement a need for a new wielder has come about, and Azmuth might have found them in young Naruto Uzumaki.

With a new hero wearing the Omnitrix, new and old enemies will make their appearance and test Naruto. Thankfully, he's not one to give up easily. It's Hero Time.

Smart Naruto, Good Sasuke.

No Omniverse events involved, strictly Alien Force and Ultimate Alien era Ben.