This trope is about what happens when a character suddenly receives an inheritance.
Very often, the character receives the inheritance from a relative that they don’t know very well, or that they rarely, if ever, see.
Much of the conflict in this trope comes from how the inheritance changes the recipient’s life, or the implications of the actual inheritance itself.
In the Sister, Sister episode, “History a la Carte,” Lisa receives an inheritance from a dead aunt that she was never close to. She starts going on a spending spree, but she is warned that she should instead use the money for something truly important. Ultimately, she uses it to start her own clothes-selling business.