Goodbye April

A mum invents a beautiful apartment.  Then she invents her two children (a boy and a girl) to fill it.  The children ask for a dad, but mum says there is no dad.  However, dad appears and tries to inveigle the family to accept him.  He keeps being rejected, until the time when he appears with memories.  The children are so enchanted by the memories that they want only the dad.  They tell mum that she is not the mum and she is forced to leave. Without mum it is quite hard to know what to do.