The whole deal with Jimmy and Timmy in NASB is weird because, unlike Geno; Porky; and other conspiracy characters in Ultimate, I can totally understand why people felt they were owed their inclusion in base - even ignoring the prescendent set by the Nicktoons Unite games they are two of Nick's most iconic and beloved characters - but at the same time, NASB never promised or even implied it'd have the Power Hour duo and acting like you were scammed by the game because of their absence is unreasonable, especially when cartoon crossover tie ins both by Nick and other studios have a long history of strange snubs with both Jimmy and Timmy being heavy victims of this, Timmy even being getting snubbed from the Unite series itself for Globs of Doom.
This is the plot of Game Shakers.