Ben 10: Perfect Day

In the Ben 10 multiverse, Ben Tennyson has many different adventures, but some adventure are universal. They just happen during different times of his lift.

Like The Highbreed invasion, some times Ben has to fight it as a kid, a teen or an adult.

So one of this universal adventure, is called the Perfect Day. This is when Ben is capture by the Forever Knights, they put Ben in a dream world. To keep him busy as they remove the Omnitrix, now the dream world is different depending on his age.

So this is a dream world for an Eighteen year old Ben.