One possible plot could be that Sonic yells at Tails because Tails made a risky decision during a mission that almost put them both in danger. For example, Tails might have tried to take on a powerful enemy alone without waiting for Sonic's backup.
Another possibility is a new character. This new character could be causing trouble between Sonic and Tails. For instance, the new character might be spreading false rumors about Tails, which makes Sonic angry at Tails.
One possible plot could be that there is a powerful new item in their world. Sonic thinks it should be used immediately to stop Dr. Eggman, but Tails believes they need to study it more first. This disagreement leads to a fight as Sonic tries to take the item by force and Tails tries to stop him.
In a 'dark sonic vs tails' fanfiction, perhaps Dark Sonic is corrupted by some dark energy. Tails, being the intelligent fox, tries to use his gadgets to fight back. Dark Sonic might have super - speed and enhanced strength due to the dark influence. Tails could be outmatched at first but then uses his wits to find a weakness in Dark Sonic's dark - powered state. Maybe he discovers a frequency that disrupts the dark energy, leading to a final showdown where Tails has to time his attack just right to save Sonic from the dark side.
Well, it could be that Sonic is dashing through the forest on one of his adventures when he suddenly hears a strange noise. He follows it and discovers Tails, who is trying to fix his broken plane. Sonic is immediately intrigued by Tails' two tails and his mechanical skills.
Well, perhaps in the fanfiction, Tails' nightmare is about his inventions going haywire. He dreams that all his machines turn against him and Sonic, and they have to fight their way through a mechanical nightmare. This might show his underlying worry about his creations causing harm rather than good.
In this fanfiction, perhaps Sonic Underground is facing a threat that they can't handle alone. Tails, being a friend of Sonic from another part of their world, comes to their aid. They discover that an ancient evil has been awakened. The story could involve Tails using his inventions to analyze the ancient evil's weaknesses while Sonic and his siblings use their unique abilities to keep the evil at bay. As they progress, they form a strong bond and learn from each other's ways of doing things.
It's not a common plot. Fanfiction writers often prefer to write about more traditional Sonic - related themes such as Sonic's heroics, the exploration of new zones, or the development of character relationships. 'Tails saves sonic fanfiction' is a rather specific and less - explored concept. However, with the wide range of creativity in the Sonic fanfiction community, it could potentially gain more popularity in the future.
One possible plot is that Sonic is exploring a new area. He comes across a small workshop where Tails is building his first plane. Sonic is intrigued by the little fox and his inventions. Tails is initially startled by Sonic's sudden appearance but then gets excited to meet his idol. They start chatting about their adventures, with Sonic sharing his tales of running fast and Tails talking about his love for inventing things.
The plot might be centered around a power - hungry or misprogrammed Metal Sonic. Tails could be in the middle of working on a project that could potentially stop Dr. Eggman for good. Metal Sonic is sent to stop this from happening by any means necessary, which unfortunately for Tails means death. It could also explore the emotional aftermath among Sonic and his friends, like how Sonic would react to the loss of his dear friend Tails. There might be a revenge plot where Sonic then sets out to destroy Metal Sonic once and for all.
One possible reason could be a misunderstanding. Maybe Sonic accidentally broke something of Tails' while on a high - speed chase. Tails, being a bit sensitive about his inventions, might get angry and start a fight.