It was operated by MTV3 and TV4 AB and was the Finnish equivalent of TV4's movie channel TV4 Film.

The channel was launched in November 2006 as a part of a new pay television package from MTV3.

The channel, which did then known as MTV3 Leffa, was launched simultaneously with MTV3 MAX, MTV3 Fakta and Sub Juniori.

In the terrestrial network, the channel operates between 8 p.m. and 6 a.m., sharing its broadcast space with MTV Juniori for the rest of the day.

When Subtv changed its name to simply Sub, the movie channel followed suit and was renamed Sub Leffa.