Basically, a point in an ongoing series or a series in a Shared Universe that exists primarily to provide a place for new readers to begin with without needing to know the entire history. This is especially common in Comic Books and other media where Continuity Snarls are common.
If a point in a series, it will often restart the numbering — instead of Spider-Man #237, it'll be Spider-Man volume 2 #1. It may be just after the resolution of a massive storyline, and it'll almost always show something similar to the general status quo of the series.
If a series in a Shared Universe, it may be set in an Alternate Universe or be about a new set of characters in the same universe, somewhat removed from the rest. It will often end up having its own Spin-Off, so that the new fanbase can diversify their reading without ever having to get fully immersed in the Universe.
When a whole new continuity is created, it's an Ultimate Universe. Compare Clip Show, which shows incidents from past episodes, whether meant to be instructive to new viewers or not, and the plot-variant of New First Comics, where at least part of the snarl is rendered non-canon, and Soft Reboot, which similarly tries to cast off the baggage of older entries (though not in a way that overrides or replaces them) in order to appeal to new fans.
- According to a Pokemon Matome interview with the film's director Kunihiko Yuyama, "now that its been 20 years there are people out there that arent familiar with" how the classic Pokémon anime started, Pokémon: I Choose You! was ultimately designed to "'depict [Ash] and Pikachu's first meeting once again, from scratch'" allowing them to enjoy Ash and Pikachu's dynamic in the "Sun & Moon" saganote without having to do a 19-year Archive Binge.
- 2000 AD does one every so often in which every strip in the prog starts a new story. They are generally identified by the presence of Tharg on the cover.
- The company CrossGen did that in one month for each and every single book.
- It was meant to be an ongoing thing, but the publisher folded before they could do more. Between recap pages (with head shots of the cast) and generally avoiding Writing Forthe Trade, though, it was easier to jump into a CG story than those from other publishers.
- DC Comics did one halfway through Countdown, when it was renamed Countdown to Final Crisis. The first issue under the new name consisted almost entirely of the Monitors discussing what had gone on in the previous 26 issues.
- DC Comics did this on a massive scale, cancelling all their titles and launching 52 new ones (most of them are just new volumes in old titles) with the intention of drawing in new readers through having a single clear starting point for all of their books. So far it seems to have worked.
- In The DCU, the "One Year Later" event was intended as a Jumping-On Point for just about every title.
- This was Marvel's intention with the "point one" issues, various issues of series that would fall as something like 13.1, to indicate that it was a good spot for new readers, generally recapping the plot up to that point. They've also released comics simply titled Marvel Point One, which are more like previews for new series that are coming out.
- Runaways and its spin-off, Loners, have done this to an extent. Wolverine doesn't even get his standard cameo until the 10th issue of the second volume. Furthermore, interaction with most of the Marvel Universe is somewhat justified. Basically, it's explained that The Pride had muscled all the other villains off the West Coast, and kept crime orderly so the superheroes didn't step in.
- With their defeat in volume 1, the West Coast now seems a likely setting for more Runaways spin-offs, built around new characters and formerly B-string superheroes whose origins can be covered quickly to the uninitiated, who attempt to help the Runaways fight the villains attempting to take over the West Coast with the power vacuum after the Pride's defeat. (On the other hand, the California-based Initiative spin-off "The Order mentions none of this.)
- Welcome to Tranquility has a group of retired superheroes and villains and their families living in a community isolated from the rest of the Wildstorm Universe. They even have their own special name for supers, "Maxis". The isolation is explained more as the series progresses.
- Issue 11 of Zot!, according to the author. Very few plot points are all that confusing, and those that are will usually be explained away in later issues.
- Babylon 5: "Points of Departure", The first episode of the second season saw a new character, John Sheridan replace Jeffrey Sinclair as The Captain, and had several recurring characters from the first season either away from the station or in a cocoon. New fans are able to learn about life on B5 at the same pace Sheridan does.
- The fifth season premiere, "No Compromises", saw another new station commander, Captain Elizabeth Lochley, coinciding with the show jumping networks to TNT. That said, the true Jumping-On Point for viewers in the fifth season was the Made-for-TV Movie "In The Beginning", which managed to sum up four seasons or so of the universe's Back Story (while also utilizing numerous clips from previous episodes to save on production costs).
- J. Michael Straczynski described the second season episode "And Now For A Word" as one of these as well, being as the entire episode is in the form of an ISN Special Report, presenting everything from an outsider's perspective.
- The revival of Doctor Who has done this every so often.
- The 2005 season with Christopher Eccleston, which marked the show's return to regular broadcasting after a 16-year hiatus (1996 telemovie aside), keeps the continuity of the old seasons (or at least as much continuity as there can be in a show about time travel), but does not require having seen the old seasons to make sense, so it is considered a jumping on point for the series. Aiding this is the fact that the show's season and episode counters both reset to 1 with the premiere of the Eccleston season; "Rose" is officially designated as the first episode of Series 1 as opposed to Season 27.
- Another point was in 2010 when Matt Smith took over the role from David Tennant they wrapped up old plotlines and discarded most of the supporting and recurring cast. There was even some confusion over whether it was a new "series one" (the idea was eventually dropped).
- And again when Peter Capaldi took over as the Doctor. That time they kept Clara as companion from Matt Smith's last season, but started her on a new plot arc as well.
- The beginning of Capaldi's last season, which introduced new companion Bill, was also conceived as a jumping-on point, with very little of the season requiring a detailed memory of prior continuity.
- And again with the start of the Thirteenth Doctor's era at the beginning of Series 11, which again introduced an entirely new regular cast and a new showrunner. The new showrunner, Chris Chibnall, even stressed in his interviews for the show that there would be no returning characters, cultures, or plot points in the entire season.
- Generally speaking, any time a new actor takes the role of the Doctor can be seen as this, as the show tends to take on a slightly different style to suit each actor. Occasionally, the arrival of a new companion is also treated as this as, in the Modern Era, the companions are explicitly intended to be analogues for the audience. However, the 1963-1989 show generally did not have much in the way of long-term plot arcs, so didn't need jumping-on points so much.
- Stargate SG-1, the beginning of Season 9 was a Jumping On point. With the eight-season long story of the Goa'uld and the Replicators pretty much wrapped up, a brand new Big Bad and a significantly changed Five-Man Band was practically a new series. Was supposed to be, but Sci Fi wanted The Longest Running Science Fiction Show on American TV. Then they promptly cancelled it once they reached that benchmark.
- As lampshaded by Anna Russell, in the opening of Götterdämmerung, the Fates re-tell the story of the first three operas "right over again from the beginning. That is, of course, in case you couldn't hear it the first time. As a matter of fact, you can miss out parts one, two, and three, and go in at the beginning of Götterdämmerung and you'll be just about as far ahead as anyone else is."
- BIONICLE attempted this a handful of times. When the first story arc ("Chronicles") was done in 2003, after a two year Flashback ("Adventures"), the story took a new turn, and in accordance with this, they restarted the comic numbering and created a new "Legends" umbrella title for the books. However the story was still set in the same universe and continued the same general plot, which eventually went messy. The folks at LEGO decided that a more radical push of the restart button was needed, so the quickly set up a whole new world with new rules, new characters and a new backstory. In half a year's worth of plot, this idea went out the window, the two storylines got tied together firmly, and a year later, LEGO ended the line.
- Whenever a Global Guardians PBEM Universe campaign recruited a new player, the game master generally used one of these to give them a level playing field to begin with rather than forcing them to hit the ground running mid-adventure. They usually took the form of a side-story that would introduce the new guy to the veterans, and vice versa, and bring the new guy up to speed. After that, the entire group would return to the original storyline.
- Red Panda Adventures does this at the beginning of each season.