Lost in Space
S01E22 The Challenge
An alien boy arrives on Priplanis to prove his royal lineage. Meanwhile, Will finds himself unexpectedly caught in a deadly duel, unaware that his father is in the dark about the situation. When John's true motives are revealed, he steps in to take his son's place in the contest, while the alien ruler takes his own son's spot in the fight.
Season 1 Episodes
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2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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18
19
20
21
22
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The Reluctant Stowaway
The Derelict
Island in the Sky
There Were Giants in the Earth
The Hungry Sea
Welcome Stranger
My Friend, Mr. Nobody
Invaders from the Fifth Dimension
The Oasis
The Sky Is Falling
Wish Upon a Star
The Raft
One of Our Dogs Is Missing
Attack of the Monster Plants
Return from Outer Space
The Keeper (1)
The Keeper (2)
The Sky Pirate
Ghost in Space
War of the Robots
The Magic Mirror
The Challenge
The Space Trader
His Majesty Smith
The Space Croppers
All That Glitters
The Lost Civilization
A Change of Space
Follow the Leader