There is a path to a room full of leaves and an obtainable cookie. The following room is a long bridge, that leads to another almost empty room. The next room is a simple puzzle area relative to the puzzles Toriel had guided you through in UNDERTALE. The game tells you to check if something in a different room has changed, but before you leave the room, it directs you back to the area where the star was, but now there is a door where the star was. To proceed, you are required to interact with the star, and then 'touch' the star. It leads to a near-empty room, with only a rainbow-colored star up in the top area. The game plays normally after the interaction with Flowey until you reach the puzzle room, where the puzzle is broken, the door is locked, and a diverging path is shown to the right. The main purpose of the game, however, being an MMO, is to interact with other players on the server, comparable to Undertale Online or Don't Forget, which are two games the creator was inspired by. Sans later states that the player is in a new Underground, of which they can never escape, and which consists of the New Ruins, the Subspace, and Snowdin. Flowey then tells the player that while they were enjoying the completion of UNDERTALE that he had obtained three souls, and is expecting to take the protagonist's soul.

When encountering Flowey after leaving the spawn area, he states how you probably never expected to see him again after UNDERTALE, so the game presumably takes place after a Neutral Run. Currently, not much plot is available as of Demo 0.9.

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