The arrival of spring finds the houseboaters recalling six months of harsh winter. Meanwhile, Pike Mike attempts to move back to Great Slave Lake; Stephan and Allyce explore the wilderness near their new home; and Henry recovers from heart surgery.

Kyle and Peyton see a bear near their home, which makes them reconsider their living situation. Meanwhile, Stephan causes a fire that could have catastrophic consequences; and Pike Mike is in danger after falling into extremely cold water.

A truck sinks into the lake when the ice starts to melt; Stephan and Allyce try to save their boat from being crushed by cutting it free; Kyle needs a new way to get home after abandoning a snowmobile.

Stephan faces a risky journey as rising temperatures turn ice into slush. Meanwhile, Kyle and Peyton seek shelter to save their boat; and Pike Mike is injured when he's in the woods by himself.

Molly installs a wind turbine during an ice storm with help from Stephan; Pike Mike's food supply and peace of mind are threatened by a lack of fish and a new neighbor; Ragnar takes advantage of harsh weather to find Canadian diamonds in a secret location.

Molly builds a water pump to avoid drilling through six feet of ice; Stephan and Allyce learn that their water is contaminated; Kyle and Peyton draw on their heritage to cure meat and preserve a hide.

Molly learns survival skills from Pike Mike; Stephan and Allyce's dog is a target for wolves at their remote cabin; Kyle and Peyton shield themselves from the severe cold in a makeshift tent.

Ragnar looks for a visitor who's lost in the tundra; a bigger home means isolation for Stephan and Allyce; Kyle and Payton can't figure out how to move their new barge.