The club reached the Third Round of the FA Cup, drawing 2–2 at home with Dagenham & Redbridge before losing the replay 2–0.
They entered the League Cup at the First Round stage and were eliminated away to Crystal Palace 2–1 after extra-time.
They also competed in the Football League Trophy where they reached the Second Round before being defeated 2–0 at home by Brentford.
Notable players to begin their careers with the Pilgrims this season included David Norris, Tony Capaldi, Hasney Aljofree, and Nathan Lowndes.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.