MySQL Error Occurred

Error Message:
1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND c.hide = '0' GROUP BY c.cat_id ORDER BY c.priority, c.cat_name ASC' at line 1

SQL:
SELECT c.* FROM store_CubeCart_category c JOIN store_CubeCart_inventory i ON i.cat_id = c.cat_id WHERE i.disabled = 0 AND c.cat_father_id = AND c.hide = '0' GROUP BY c.cat_id ORDER BY c.priority, c.cat_name ASC