Migi and Dali have been fully accepted as members of the Sonoyama family.
They behave just like real parent and child, but the twins notice that Mom and Dad are acting somewhat distant.
Suspecting that the Sonoyama couple might be hiding something, the two discreetly begin to search the house and stumble upon an unexpected secret of the couple.

Migi and Dali are shocked, wondering if they have been deceived. However, determined not to let things end this way, they execute a plan to retaliate against the Sonoyamas.
…what happens if you try to deceive us.
.ماذا يحدث عندما تحاول خداعنا
Die werden bereuen,
uns betrogen zu haben.
Esto es lo que pasa
si intentan engañarnos.
Esto es lo que pasa
si intentáis engañarnos.
Vous allez voir ce qu’il en coûte
de nous berner.
Que eles aprendam a não nos enganar!