If there is no previously existing valid will, or an existing will is invalidated, the estate will be distributed according to the rules of intestate succession. In other words, the government will determine how your parent’s estate is distributed. In Ontario, the SLRA governs intestate succession. This law typically provides for children to inherit a share of the estate.
Before you can benefit from intestate succession, you must prove there is no will or that any existing will is invalid through a court challenge.