Robyn and her friends prepare for Lionheart Day, a festival honoring Sherwood's fallen leader and Little John's mentor; just as Robyn hopes for a return to normal life, Lionheart's killer, the infamous Guy Gisbourne, returns from prison.

When John Prince bribes a pharmaceutical magnate to cut off Sherwood's medical supplies, he threatens Tressie's delicate health and drives Robyn and The Hood to a daring heist.

When Chet Prince mistreats Alan's friend Elmore, Robyn and The Hood decide to crash his birthday party and steal from the richest playboy in town.