After the event of "Kirby and the Forgotten Land", Kirby and his friends were enjoy the day while laughing with each other.
When suddenly a portal appeared in front of them and sucks them into another world.
A world where monster, dwarf, elfes, human, demon lords and even Slime lives.
Kirby and his friends will meet a village where monster, human, dwarf, elfes and demon lords lives together.
They will meet a slime that is a Demon lord.
And together they will meet some news and olds powerful ennemies.
Will Kirby and Rimuru and their friends will defeat the ennemies and help Kirby and his friends to returns to their home?
