>> yuccas: finally tonight, people in plymouth, massachusetts had big plans to mark the 400th anniversary of the pilgrim's arrival... but then covid happened, and, well, you know. still, like this year, the real story of that first thanksgiving gathering is complicated. here's cbs's nancy chen. >> reporter: a newly-restored "mayflower 2" returned to plymouth, massachusetts this summer, nearly 400 years after its namesake original first arrived on these shores. the pilgrims on board cramped and cold, hoping for a better future. >> what happened here really shaped american history. >> reporter: michelle pecoraro is the executive director of plymouth 400, a nonprofit that commemorates the pilgrims and ims andegacy. this year, they added collaborators who were left out of past anniversary events. >> we have wampanoag board