The original cast of Ah Boys to Men will reprise their roles this time as recruits of Singapores Naval Diving Unit (NDU).
The movie offers a peek into the intensive training regime of the NDU, which have never been revealed so far. Together, the boys must survive 40 weeks of hell to become frogmen, one of Singapores most fearsome military units.
In an alternate timeline, Ken, Lobang and Wayang King are transferred to the Naval Diving Unit (NDU) and have to overcome obstacles and personal issues to grow as people.