But I Have a Receipt

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==Summary==
"But I Have a Receipt" is the 24th episode of the series and the 12th episode of the 2nd season. All park employees are present.
 
==Explanation==
Mordecai and Rigby try to return a mediocre role-playing board game (The Realm of Darthon) to a grumpy store manager. But when the manager refuses to give a refund, the duo try to retaliate by pointing out the board game's imperfections to oncoming customers. After driving out his last customer, the enraged store manager traps Mordecai and Rigby in the game and it's up to them to escape and get their refund. Mordecai and Rigby gain medieval clothing and weapons, and soon call upon Pops, Benson and Skips to help them kill the minions. As soon as all the minions are killed, Mordecai and Rigby must fight Darthon, the manager. Darthon repeatedly hurls weapons to kill Mordecai and Rigby, but doesn't. Mordecai gets the Immunity Sword and stabs Darthon, and the scene shifts back to reality, where it is revealed that Darthon was stabbed with a ruler.