MS & Soren: An Unlikely Alliance

 is a crossover-sequel between MS & Flametail: Superstar Saga and Soren & Terrie: Double Trouble. It will star half of both games' protagonists, Moon Snail and Soren Mayer, and will expand on their relationship/rivalry.

Story
The story takes place a few years after the events of The Scythe of Souls. Moon Snail and Soren have shaky opinions of each other due to Moon Snail's role in Phantom's army. MS tried to make amends, but gave up quickly when it became obvious she wanted nothing to do with him. The duo are now spending most of their time with their friends, not thinking about each other at all.

However, at the same time, Venamus approaches Rift with an offer for an alliance. Rift thinks about it, not really being much for allies, but agrees to help him temporarily, just to get back at Moon Snail for what happened in MS & Flametail: Superstar Saga. While Venamus is excited to have the beast on his side, Rift only seeks to use their alliance to his advantage only.

A few days later, MS, Flametail and Lemres are all at a park, enjoying the view. However, Venamus confronts them as they're distracted. MS and Flametail initiate a battle with him, but it's a hopeless boss fight, and he easily wipes the floor with the duo. He fires his blaster at them, knocking MS cold and sending Flametail flying. He kidnaps Lemres shortly afterwards and leaves.

Meanwhile, the noobs get an alert of an extremely powerful virus beast, more powerful than any other they've seen so far. They go to the location and confront a virus-infected Rift. They attempt to battle him, but he defeats Kevin, Tyler and Roach incredibly easy, while grabbing hold of Shope. Soren and Terrie attempt to stop him, but similarly, it's also a hopeless boss fight. Soren's knocked out, and Rift grabs Terrie and flies away with him and Shope. Terrie manages to wriggle free, but falls deep into a forest, leaving Shope in the claws of the beast.

Moon Snail and Soren wake up, now realizing that their respective lovers are missing. The two seek for help, also having their closest allies missing, but eventually run into each other. They're initially averted to a possible alliance, but knowing their similar situations, begrudgingly agree to join together and take down the new menaces.

Playable

 * Soren Mayer: One of the main protagonists, plays similarly to how she did in Soren and Terrie: Double Trouble
 * Moon Snail: The other main protagonist, plays similarly to how he did in MS & Flametail: Superstar Saga
 * Flametail: Temporarily playable in the first battle against Count Venamus.
 * Terrie Pines: Temporarily playable in the first battle against Rift.

Supporting cast

 * Lemres: Moon Snail's husband, kidnapped by Venamus in the prologue.
 * Shope: One of the noobs, and Soren's girlfriend. Kidnapped by Rift in the prologue.
 * Tyler, Kevin and Roach: The other noobs, who are heavily injured in the battle against Rift.
 * Ecolo: One of the main villains of MS & Flametail: Superstar Saga. They want to make amends to Moon Snail, so they teach him and Soren new tactics across the game.
 * Minkru, Ukor and Struls: Venamus's kids that appear during the final battle against Venamus, cheering their father on.

Antagonists

 * Rift: One of the main antagonists.
 * Count Venamus: The other main antagonist.
 * Lemongrab: One of the main villains of MS & Flametail: Superstar Saga. Wants revenge on MS for the events of that game.
 * Feli: A creepy divinator known to commit to occult business, as well as her crush on Lemres. She attacks the heroes out of spite for MS and Lemres getting together.