Most [[SoapOpera soaps]] fall under two categories, LoadsAndLoadsOfCharacters and LongRunners.

Over this long period they have perfected the method of keeping the stories moving and the characters changing: [[PlotThreads The A B C plot wheel.]]

Plot A -- one of the teenagers is pregnant. Halfway through this StoryArc, Plot B will kick in - someone has amnesia. By the time Plot A is finished and the teenager has undergone a heartwarming transformation, the main character in Plot B is in a hospital bed and has just remembered that his wife was the one who tried to kill him. Then in another part of the cast, a long-running character's never-before-seen daughter has started taking drugs - Plot C starts. When their parents find out, Plot B's wife is in jail and he is happily settled in his new life. Meanwhile Plot A's baby is now a toddler due to SoapOperaRapidAgingSyndrome, and is being stalked by her real father and the mother is going slowly mad.

By starting a new story about half way through another, there is a constant rotation of new plots. The drama keeps flowing, and these people never receive a moment's rest. This is the SoapWheel, the time-tested way to turn LoadsAndLoadsOfCharacters into a nonstop cavalcade of drama.

For a similar trope that happens in a single episode of a series, see TwoLinesNoWaiting. For the "episodic" version of this trope, see FourLinesAllWaiting. Compare NestedStory and KudzuPlot. Can easily become a MindScrew.
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!!Examples:
* ''{{Eastenders}}'' was an early pioneer of this format and still uses it today.
* ''Series/CoronationStreet'': Another long running British soap.
* ''Series/{{Hollyoaks}}''
* ''FamilyAffairs''
* ''{{Neighbours}}''
* ''HomeAndAway''
* ''Series/DaysOfOurLives''
* ''{{Dynasty}}''
* Almost every other show on the SoapOpera index.
* Utilized by several anime adaptations of visual novels, notably ''{{VisualNovel/Kanon}}'' and ''{{VisualNovel/Air}}''. A justified use, since it's a good way to merge several characters' nonconvergent individual stories from the games into a series that gives everyone a chance in the spotlight.
* ProfessionalWrestling uses this on a regular basis, rotating feuds in the undercard -- which fits, as it's often referred to as a SoapOpera for men.
* SuperHero comic books that have strong supporting casts often do this as well. Though the practice dwindled once WritingForTheTrade became popular, it has been making a comeback lately.
** For example, see the early issues of Creator/JohnByrne's run on WestCoastAvengers. During the "Vision Disassembled" arc hints are dropped about the Great Lakes Avengers. When the GLA take the main stage, you start seeing subplots about the Scarlet Witch's potential abduction. During all of this, the Witch's "imaginary children" plotline is given a few panels each issue.
* ''Series/BabylonFive'' - WordOfGod is that each season is structured to introduce a new StoryArc in the first several episodes, while resolving the StoryArc of the previous season about on third of the way in. The series creator stated that he felt the biggest weakness of most "mystery driven" series is that at some point viewers will either get bored with the mystery or decide that it will never end up being solved. By ''actually resolving'' previous arcs viewers are more invested in the current one.
* Some {{Game Master}}s who run TabletopRolePlayingGames use this technique to keep their campaigns open-ended, planting hooks for future adventures in the current one.
* And let's not forget ''{{Soap}}''!
* RumorsOfWar is a [[WebComics web comic]] that makes use of a variant of the SoapWheel (by combining [[RotatingProtagonist Rotating Protagonists]] with [[TimeSkip Time Skips]]) to create a Cast-Go-Round. The plot keeps the moving even though tons of significant action takes place off-screen. Even the characters are left but to comment on what's happened and prepare for the next.
* Done musically by Music/DreamTheater. The fourth through eight albums were composed in a way that turned them into one continuous album if listened from start to finish, but in the second album of the series, they introduced a multi-part song that would not be finished until the tenth album.
* ''Series/BattlestarGalacticaReimagined'' used this. In the UniverseBible, Ron Moore cited ''HillStreetBlues'' as an influence.
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