The 2019/20 Sky Bet Championship campaign resumed on Saturday 20th June - but in bizarre and never-seen-before circumstances.
Social distancing, testing, red zones and - most notably - behind-closed-doors football were now on the menu as The Lions welcomed Derby County to SE16 for the first game of 'the new normal.'
Matt Smith and Jon Dadi Bodvarsson were on target for Millwall, but The Rams' young prospect Louie Sibley grabbed a hat-trick to ensure Philip Cocu's side took all three points home with them.
A goalless stalemate at lowly Barnsley did little to boost The Lions' hopes of breaking into the top six a week later, as neither did a 1-1 draw against Swansea City, but Jake Cooper's late winner at The Valley at least ensured that Millwall's long-standing unbeaten run against Charlton Athletic would extend into another season with a 1-0 win on Friday 3rd July.
Middlesbrough took three points from The Den the following Wednesday, in controversial circumstances which seemed to have ended The Lions' season, but a 1-0 win at Hull City, coupled with favourable results elsewhere, meant that Gary Rowett's outfit were still in the running with three matches remaining. Ryan Leonard notched a Goal of the Season contender at the KCOM Stadium with a thumping effort in just the second minute.
Mason Bennett's solitary goal against Blackburn Rovers nudged Millwall even closer to the top six, but a crazy second-half at the Kiyan Prince Foundation Stadium against Queens Park Rangers on the penultimate matchday of the season mathematically ended any hopes.
The Lions lost 4-3, but had the ball in the Rangers net five times - two, including a last-second Shaun Hutchinson header - were disallowed for offside.
A remarkable campaign ended on Wednesday 22nd July with the visit of Huddersfield Town to The Den. Connor Mahoney's early goal gave Millwall the lead, with goals from Cooper, Jiri Skalak and Bodvarsson securing a comfortable 4-1 success to ensure the season ended in eighth place.
Take a look at all the goals from Part Four of our Season Review below...