Winter, Spring, Summer, Autumn -- birth, growth, fading, death -- the Wheel turns, on and on.  Ideas are born; projects are consummated; plans prove impractical and die.  We fall in love; we suffer loss; we consummate relationships; we give birth; we grow old; we decay.  

The Sabbats are the eight points at which we connect the inner and the outer cycles: the interstices where the seasonal, the celestial, the communal, the creative and the personal all meet.  As we enact each drama in its own time, we transform ourselves.  We are renewed; we are reborn even as we decay and die.  We are not separate from each other, from the broader world around us; we are one with the Goddess ... as the season changes, we arouse the power from within, the power to heal, the power to change our society, the power to renew the earth ... 

 -- "The Sabbats," from The Spiral Dance by Starhawk 

Wheel of the Year is a serial that works with S5/S2 events and revolves around all the characters, not merely one specific pairing (although there is an emphasis on Buffy and there are undertones and overtones that are fairly consistent such as W/T, X/A, B/A and B/R).  These stories explore romantic, sexual, antagonistic, familial and platonic relationships, as well as where the lines between them blur.  Each one takes place during  or around the eight Sabbats and explores how the characters relate to their reality at a given point in time.  This begins after Season 4 of BtVS and Season 1 of Angel.  Since character pairing and rating will vary from story to story, please be sure to watch the content warnings.

Lughnasa Fire  [Hard R: Willow/Tara/Buffy/Anya]  It's Lughnasa, and Willow invites Buffy and Anya to celebrate the occasion … and learns a few things about her best friend in the process.  

Harvest Home  [PG13]  The autumnal solstice brings various conversations between friends, lovers and enemies.  Some wounds are healing, but others are just beginning. 

Day of the Dead  [PG13]  Samhain has arrived and as the characters prepare to face the winter and the New Year, some old ghosts are finally laid to rest.

The Longest Night  [PG13]  The Winter Solstice is the longest night of the year in more than one sense.

Circles of Light  [PG13]  Candlemas has arrived and with it comes reflections, introspection and conversations on the past and future.

Equipoise [PG13]  Day and night are once more in perfect balance, leading Buffy and Faith to an understanding.

The Rites of May [Hard R]  Wherein it's Beltane Eve in Sunnydale, and Buffy learns of a surprise planned by Willow and Tara.

The Longest Day  [R]  Buffy's dead.  No one's coping very well.