Reiko raises her son alone and runs a soba shop. The son is now a university student who plays instead of helping. His friend Shiro offers to work part-time. He secretly overlays his mother’s image on Reiko and holds a warped desire while wanting to help. After a shift he gives her a Mother’s Day gift and cannot hold the overflowing lust. He licks her whole body hard and she drowns in the younger man’s fluids and cock.