Explanation needed for my result

I am new to string handling in SQL server and was wondering what makes the below code return the result it returns. Could I please have a detailed explanation? **My code:**

Select CAST(CAST(CAST('08' as nvarchar) as varbinary) as varchar) as [result]

**Output:** >| Result |\ | 0 | What is happening here from '08' being converted to nvarchar to varbinary to varchar??