In simple words, it builds taxonomy field menus, i.e., menus based on connection between terms and nodes. After installation, admin goes to taxonomy field's editing page, like "admin/structure/types/manage/article/fields/field_test_term", there will be "TAXONOMY FIELD MENU SETTING", enable it and you will get a menu based on this taxonomy field. There're options that you can synchronize nodes and terms to this field's menu.
Features:
Menus based on taxonomy field, automatically connecting term hierarchy and nodes when terms and nodes are created/updated/deleted.
Menu trails, INCLUDING nested terms available at node pages' breadcrumb, as long as this node has enabled with taxonomy field menu.
Custom term pages for taxonomy field menu to only include nodes associated with this term via this menu's' taxonomy field.
Custom page could include child terms' nodes. As opposed to default term page, it doesn't.
Token and pathauto/url_alias support for custom term page.