Mary prepares for her official debut in London society, buoyed by her friendship with Ann and the attentions of Mr Ryder. But a run-in with her old rival Caroline Bingley threatens Mary's growing confidence. Mary faces up to her old rival at a dinner party, but just as things seem to be shifting for Mary, an urgent message from home throws everything into uncertainty.

Under pressure from her mother, Mary weighs up an unconventional offer from Mr Ryder. As Mary grapples with what she truly wants, Lizzy and Mr Collins help Mary chart her own course. And just as Mary thinks she's taken her future into her own hands, a surprise visit from her aunt and uncle leaves everyone reeling.