United make a quickfire return to the Jakemans Community Stadium, following Saturday's sodden 1-0 defeat at the hands of Peterborough United.
It will be the Pilgrims' fourth pre-season outing to date - following opening trips to Lincoln United and Boston Town before the Posh fixture on Saturday.
The Mariners, with ex-Pilgrims Shaun Pearson, Ben Davies and Steve Croudson on the coaching staff, make a pre-season visit to the JCS for the fourth time in five seasons - 10 days before the start of their EFL season.
United fans will have use of the Optic-Kleer (East) Stand, as normal, for this fixture - with tickets on sale here for all areas of the stadium.